Bosch Bi-Metal Hole Saw 4 in. (Model HBT400)

Experience fast, clean and reliable hole cutting across a variety of materials with the Bosch 4 in. Bi-Metal Hole Saw. Engineered for professional performance, it features Bosch’s enhanced M42 bi-metal alloy—infused with 8 % cobalt—for superior heat resistance and up to 20 % longer life. A deeper cup capacity and Progressor™ tooth design deliver smoother, faster cuts in wood, metal, plastic and drywall. Plus, the unique triangle chip-clearance slots reduce heat buildup and simplify plug removal for uninterrupted productivity.

Whether paired with a standard arbor or the SpinLOCK® Universal arbor (sold separately), this versatile hole saw provides the durability and precision that pros demand on the jobsite.

Key Features

• PROFESSIONAL-GRADE CONSTRUCTION – Enhanced M42 bi-metal alloy with 8 % cobalt for high-temperature resilience and cleaner cuts
• PROGRESSOR™ TOOTH DESIGN – Alternating large and small teeth cut faster and last longer in wood, metal and plastic
• TRIANGLE CHIP-CLEARANCE SLOTS – Shark-tooth slots improve plug ejection and reduce heat buildup
• REINFORCED SHOULDERS – Extra support for extended tool life under heavy use
• DEEPER CUP PROFILE – Drills through thicker materials without sacrificing stability
• ARBOR COMPATIBILITY – Works with standard arbors; optimized for use with SpinLOCK® Universal arbor

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.