diff --git a/src/arcaea_offline_ocr/device/v2/rois.py b/src/arcaea_offline_ocr/device/v2/rois.py
index 538ef49..100aece 100644
--- a/src/arcaea_offline_ocr/device/v2/rois.py
+++ b/src/arcaea_offline_ocr/device/v2/rois.py
@@ -1,183 +1,15 @@
-from typing import Tuple, Union
+from typing import Union
 
 from ...crop import crop_black_edges, crop_xywh
 from ...types import Mat, XYWHRect
 from .definition import DeviceV2
+from .sizes import Sizes, SizesV1
 
 
 def to_int(num: Union[int, float]) -> int:
     return round(num)
 
 
-def apply_factor(num: Union[int, float], factor: float):
-    return num * factor
-
-
-class Sizes:
-    def __init__(self, factor: float):
-        raise NotImplementedError()
-
-    @property
-    def TOP_BAR_HEIGHT(self):
-        ...
-
-    @property
-    def SCORE_PANEL(self) -> Tuple[int, int]:
-        ...
-
-    @property
-    def PFL_TOP_FROM_VMID(self):
-        ...
-
-    @property
-    def PFL_LEFT_FROM_HMID(self):
-        ...
-
-    @property
-    def PFL_WIDTH(self):
-        ...
-
-    @property
-    def PFL_FONT_PX(self):
-        ...
-
-    @property
-    def PURE_FAR_GAP(self):
-        ...
-
-    @property
-    def FAR_LOST_GAP(self):
-        ...
-
-    @property
-    def SCORE_BOTTOM_FROM_VMID(self):
-        ...
-
-    @property
-    def SCORE_FONT_PX(self):
-        ...
-
-    @property
-    def SCORE_WIDTH(self):
-        ...
-
-    @property
-    def JACKET_RIGHT_FROM_HOR_MID(self):
-        ...
-
-    @property
-    def JACKET_WIDTH(self):
-        ...
-
-    @property
-    def MR_RT_RIGHT_FROM_HMID(self):
-        ...
-
-    @property
-    def MR_RT_WIDTH(self):
-        ...
-
-    @property
-    def MR_RT_HEIGHT(self):
-        ...
-
-    @property
-    def TITLE_BOTTOM_FROM_VMID(self):
-        ...
-
-    @property
-    def TITLE_FONT_PX(self):
-        ...
-
-    @property
-    def TITLE_WIDTH_RIGHT(self):
-        ...
-
-
-class SizesV1(Sizes):
-    def __init__(self, factor: float):
-        self.factor = factor
-
-    def apply_factor(self, num):
-        return apply_factor(num, self.factor)
-
-    @property
-    def TOP_BAR_HEIGHT(self):
-        return self.apply_factor(50)
-
-    @property
-    def SCORE_PANEL(self) -> Tuple[int, int]:
-        return tuple(self.apply_factor(num) for num in [485, 239])
-
-    @property
-    def PFL_TOP_FROM_VMID(self):
-        return self.apply_factor(135)
-
-    @property
-    def PFL_LEFT_FROM_HMID(self):
-        return self.apply_factor(5)
-
-    @property
-    def PFL_WIDTH(self):
-        return self.apply_factor(76)
-
-    @property
-    def PFL_FONT_PX(self):
-        return self.apply_factor(26)
-
-    @property
-    def PURE_FAR_GAP(self):
-        return self.apply_factor(12)
-
-    @property
-    def FAR_LOST_GAP(self):
-        return self.apply_factor(10)
-
-    @property
-    def SCORE_BOTTOM_FROM_VMID(self):
-        return self.apply_factor(-50)
-
-    @property
-    def SCORE_FONT_PX(self):
-        return self.apply_factor(45)
-
-    @property
-    def SCORE_WIDTH(self):
-        return self.apply_factor(280)
-
-    @property
-    def JACKET_RIGHT_FROM_HOR_MID(self):
-        return self.apply_factor(-235)
-
-    @property
-    def JACKET_WIDTH(self):
-        return self.apply_factor(375)
-
-    @property
-    def MR_RT_RIGHT_FROM_HMID(self):
-        return self.apply_factor(-300)
-
-    @property
-    def MR_RT_WIDTH(self):
-        return self.apply_factor(275)
-
-    @property
-    def MR_RT_HEIGHT(self):
-        return self.apply_factor(75)
-
-    @property
-    def TITLE_BOTTOM_FROM_VMID(self):
-        return self.apply_factor(-265)
-
-    @property
-    def TITLE_FONT_PX(self):
-        return self.apply_factor(40)
-
-    @property
-    def TITLE_WIDTH_RIGHT(self):
-        return self.apply_factor(275)
-
-
 class DeviceV2Rois:
     def __init__(self, device: DeviceV2, img: Mat):
         self.device = device
diff --git a/src/arcaea_offline_ocr/device/v2/sizes.py b/src/arcaea_offline_ocr/device/v2/sizes.py
new file mode 100644
index 0000000..254695a
--- /dev/null
+++ b/src/arcaea_offline_ocr/device/v2/sizes.py
@@ -0,0 +1,174 @@
+from typing import Tuple, Union
+
+
+def to_int(num: Union[int, float]) -> int:
+    return round(num)
+
+
+def apply_factor(num: Union[int, float], factor: float):
+    return num * factor
+
+
+class Sizes:
+    def __init__(self, factor: float):
+        raise NotImplementedError()
+
+    @property
+    def TOP_BAR_HEIGHT(self):
+        ...
+
+    @property
+    def SCORE_PANEL(self) -> Tuple[int, int]:
+        ...
+
+    @property
+    def PFL_TOP_FROM_VMID(self):
+        ...
+
+    @property
+    def PFL_LEFT_FROM_HMID(self):
+        ...
+
+    @property
+    def PFL_WIDTH(self):
+        ...
+
+    @property
+    def PFL_FONT_PX(self):
+        ...
+
+    @property
+    def PURE_FAR_GAP(self):
+        ...
+
+    @property
+    def FAR_LOST_GAP(self):
+        ...
+
+    @property
+    def SCORE_BOTTOM_FROM_VMID(self):
+        ...
+
+    @property
+    def SCORE_FONT_PX(self):
+        ...
+
+    @property
+    def SCORE_WIDTH(self):
+        ...
+
+    @property
+    def JACKET_RIGHT_FROM_HOR_MID(self):
+        ...
+
+    @property
+    def JACKET_WIDTH(self):
+        ...
+
+    @property
+    def MR_RT_RIGHT_FROM_HMID(self):
+        ...
+
+    @property
+    def MR_RT_WIDTH(self):
+        ...
+
+    @property
+    def MR_RT_HEIGHT(self):
+        ...
+
+    @property
+    def TITLE_BOTTOM_FROM_VMID(self):
+        ...
+
+    @property
+    def TITLE_FONT_PX(self):
+        ...
+
+    @property
+    def TITLE_WIDTH_RIGHT(self):
+        ...
+
+
+class SizesV1(Sizes):
+    def __init__(self, factor: float):
+        self.factor = factor
+
+    def apply_factor(self, num):
+        return apply_factor(num, self.factor)
+
+    @property
+    def TOP_BAR_HEIGHT(self):
+        return self.apply_factor(50)
+
+    @property
+    def SCORE_PANEL(self) -> Tuple[int, int]:
+        return tuple(self.apply_factor(num) for num in [485, 239])
+
+    @property
+    def PFL_TOP_FROM_VMID(self):
+        return self.apply_factor(135)
+
+    @property
+    def PFL_LEFT_FROM_HMID(self):
+        return self.apply_factor(5)
+
+    @property
+    def PFL_WIDTH(self):
+        return self.apply_factor(76)
+
+    @property
+    def PFL_FONT_PX(self):
+        return self.apply_factor(26)
+
+    @property
+    def PURE_FAR_GAP(self):
+        return self.apply_factor(12)
+
+    @property
+    def FAR_LOST_GAP(self):
+        return self.apply_factor(10)
+
+    @property
+    def SCORE_BOTTOM_FROM_VMID(self):
+        return self.apply_factor(-50)
+
+    @property
+    def SCORE_FONT_PX(self):
+        return self.apply_factor(45)
+
+    @property
+    def SCORE_WIDTH(self):
+        return self.apply_factor(280)
+
+    @property
+    def JACKET_RIGHT_FROM_HOR_MID(self):
+        return self.apply_factor(-235)
+
+    @property
+    def JACKET_WIDTH(self):
+        return self.apply_factor(375)
+
+    @property
+    def MR_RT_RIGHT_FROM_HMID(self):
+        return self.apply_factor(-300)
+
+    @property
+    def MR_RT_WIDTH(self):
+        return self.apply_factor(275)
+
+    @property
+    def MR_RT_HEIGHT(self):
+        return self.apply_factor(75)
+
+    @property
+    def TITLE_BOTTOM_FROM_VMID(self):
+        return self.apply_factor(-265)
+
+    @property
+    def TITLE_FONT_PX(self):
+        return self.apply_factor(40)
+
+    @property
+    def TITLE_WIDTH_RIGHT(self):
+        return self.apply_factor(275)