BOSCH HBT425 4-1/4 in. Bi-Metal T-Slot Hole Saw

PROFESSIONAL HOLE SAW DESIGN – features improved durability, clean performance and easier plug removal in multiple materials ENHANCED M42 ALLOY – contains 8% cobalt alloy to withstand high-temperature applications, and it is stronger for cleaner cuts TRIANGLE CHIP-CLEARANCE SLOT DESIGN – improves efficiency of plug removal and reduces heat due to triangle shark tooth shape PROGRESSOR TOOTH DESIGN – hole saws feature alternating teeth size for performance, cutting faster and lasting longer in wood, metal and plastic materials REINFORCED SHOULDERS – provide added strength and longer life to the hole saws