Starrett Bi-Metal Fast Cut Hole Saw 70mm

The Starrett Fast Cut Bi-Metal Holesaw is engineered for fast, smooth cutting across a range of materials. Featuring an enhanced cobalt HSS tooth material and a 5.5 TPI positive rake tooth design, it delivers smoother cuts and extended wear life compared to traditional designs. The system includes a 41mm cutting depth and a 70mm diameter (with sizes available from 14mm to 210mm), and is designed to cut through stainless steel, mild steel, and similar metals. It also accommodates softer materials and wood for versatile interior and DIY projects. Notable features include 30% extra gullet volume for better material penetration and a non-binding edge to help maintain a clean cut. This hole saw is compatible with standard drill chucks and arbors and is intended to be used with appropriate cutting lubricant and steady technique for best results. It does not include an arbor or pilot drill, so users should prepare compatible accessories separately.

Features

• Enhanced cobalt HSS tooth material and 5.5 TPI design for smoother cuts
• Non-binding edge and sharp tooth shape for clean, fast cutting
• 30% extra gullet volume for better material penetration
• Suitable for stainless steel and mild steel sheets; also cuts through tubes up to 3mm wall thickness (1/8in)
• Depth of cut: 41mm; diameter: 70mm; sizes available 14mm–210mm

Specifications

• Diameter: 70mm (sizes range 14mm–210mm)
• Cutting depth: 41mm
• Tooth pitch: 5.5 TPI / 25mm
• Material: Bi-metal for durability and heat resistance
• Compatibility: standard drill chucks and hole saw arbors
• Note: does not include arbor or pilot drill

Use appropriate cutting lubricant, apply steady pressure, ensure the saw is securely mounted, and allow cooling periodically during extended use to prevent overheating.