The Makita SDS-MAX, 1pc 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 SDS-MAX, 1pc Bushing Tool is clear-coat engineered to prevent corrosion for a longer bit life.