Pro Gas Block Dimple Jig:
0.420" center to center on holes, YHM, Spikes, DD MK12, Seekins and gas blocks with 0.750 bore and 0.420" spaced holes, can also be used on 0.625 pencil barrels with use of adapter sleeve. Can also be used with most gas blocks since the location under the gas port is always the same. Same body as our standard dimple jig but has two replaceable hardened drill inserts instead of the heat treated body.
1045 carbon steel
11/64" Hardened Drill Inserts
Media blasted and Manganese Phosphate finish
Includes:pointed and soft point set screws, 3/32" hex key.and cobalt 11/64" stub drill