About this item
1 1/4 -7 UNC Female thread Shaft(Arbor) Hex Nut
6 Piece Set (1.5", 2.5", 3.5",4.5",5",6") Supreme Series Diamond Core Drill Boring Bits to Cut Hard Concrete, Reinforced Concrete Brick and Block
17" Overall Length 14" Long Barrel Length
Built for Pros who need the highest quality core drill bits