The Makita 1-1/8 in. Hex 1 pc. Bushing Tool is manufactured using state-of-the-art technology, CNC machined and forged from industrial-grade alloy material for increased durability. Shot peened for added strength and increased surface hardness, the 751715-A is ideal for roughing up concrete to prepare for surface treatment or new concrete. The 1-1/8 in. Hex 1 pc. Bushing Tool is clear-coat engineered to prevent corrosion for a longer bit life.