Draper 34744 HSS Bi-Metal Holesaw Blade 21mm

This high-speed, variable pitch bi-metal holesaw blade is designed for precise and clean cuts in metals, plastics, and wood. It features a hardened M3 steel cutting edge welded to a tough alloy steel body, reducing the risk of shattering and delivering durable performance. The blade is suitable for drilling holes up to 35mm (1.3/8”) deep and is built for heavy-duty applications when attached to a compatible power drill. The combination of bi-metal construction and variable pitch enhances cutting efficiency and longevity, making it a reliable choice for demanding materials such as wood, steel, brass, bronze, cast iron, aluminium, and plastic. It is designed with practical features including slug removal slots and a spindle that fits standard arbors, supporting fast and accurate cutting in stubborn materials.

Features

• Bi-metal construction with hardened M3 steel edge
• Maximum cutting depth: 35mm (1.3/8”)
• Variable pitch design for efficient cutting
• Four side slug removal slots
• Size: 21mm; compatible with standard arbors
• Suitable for wood, steel, brass, bronze, cast iron, aluminium, plastic

Technical specifications

• Maximum cutting depth: 35mm (1.3/8”)
• Size: 21mm diameter
• Edge: Hardened M3 steel
• Arbor compatibility: standard 9.5mm (3/8”) arbors