Diablo 1 2" x 37" x 39" SDS Plus 2 Cutter Carbide Tipped Hammer Drill Bit DMAPL2350 Blades so these knives integrate smoothly so these knives integrate smoothly into existing setups without requiring new tooling investment The PTFE coated spiral and HW construction together address the two most common causes of premature dowel drill failure pitch glue adhesion and cutting edge wear keeping the tool productive across extended production runs in chipboard 1 2" diameter with 39" overall length and 37" working length provides exceptional reach for deep anchor installations and through slab applications precise holes in concrete and brick block