Jeremywell Dry Diamond Drill Core Bit for Brick and Concrete with Pilot Bit - 4" (102mm) Diameter with SDS Plus Arbor for #30/40 Diamond, Laser Welded

The dry diamond drill core bit comes with a taper lock system which provides extra security compared to a set screw lock.

Insert drill into taper lock.

Tap it on a hard surface to center drill bit and lock it into place, no set screws required.

To release, insert drift key sharp side up into the taper lock hole.

Tap it on a hard surface to release drill bit.

High diamond concentration for excellent footage and drilling speed.For use on hand held core drills and core drill standLaser Welded - #30/40 diamond grit segment design allows fast drilling with a longer lifeDry Drill Bit with Pilot Connection 1/2"BSP threaded attachment