Drills MTS Inch 1/16" to 4" sizes 1/16 5/64 3/32 7/64 1/8 9/64 5/32 11/64 3/16 13/64 7/32 15/64 1/4 17/64 9/32 19/64 5/16 21/64 11/32 23/64 3/8 25/64 13/32 27/64 7/16 29/64 15/32 31/64 1/2 33/64 17/32 35/64 9/16 37/64 19/32 39/64 5/8 41/64 21/32 43/64 11/16 23/32 47/64 3/4 49/64 25/32 51/64 13/16 7/8 53/64 27/32 55/64 57/64 29/32 59/64 15/16 61/64 31/32 63/64 1" upto 4" Drill MTS Inch 200 sizes below. Excellent quality British made. All stocked - View what customers say about Us