The WOODRUFF Key Seat cutter is a circular cutter integral with a parallel shank for holding and driving having definite diameter and width with sides slightly concave designed  for cutting seating in shaft for Woodruff Keys.

Dimensions in mm
(They can also be manufactured as per US and EU standard sizes and specifications)

Dia (h11) Width (e8) Dia of Shank Overall Length Woofruff key to IS 2294
10.5 2 6.0 50 2x3.7
2.5 2.5x3.7
3 3x3.7
13.5 3 10 56 3x5
4 4x5
16.5 3 10 56 3x6.5
4 4x6.5
5 5x6.5
19.5 4 10 56 4x7.5
5 56 5x7.5
6 63 6x7.5
22.5 10 63 5x9
6 6x9
8 8x9
25.5 6 10 63 6x10
28.5 6 10 63 6x11
8 10 63 8x11
10 12 71 10x11
32.5 8 10 63 6x13
10 12 71 10x13
45.5 10 12 71 10x16