Housing groove width

12.7 mm, 0.5 in
15.0 mm, 0.591 in
15.875 mm, 0.625 in
15.88 mm, 0.625 in
16.0 mm, 0.63 in
18.0 mm, 0.709 in
19.05 mm, 0.75 in
20.0 mm, 0.787 in
20.65 mm, 0.813 in
25.0 mm, 0.984 in
25.4 mm, 1.0 in