The Makita Spline 3 in. x 12 in. Scaling Chisel 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 751233-A is ideal for removing surface material and for chipping. The Spline 3 in. x 12 in. Scaling Chisel is clear-coat engineered to prevent corrosion for a longer bit life.