Starrett 20mm hole saw, manufactured from bi-metal HSS (high speed steel), a durable, reliable hole cutter for use on a range of different materials including metal, wood, plasterboard, stainless steel, fiberglass and thin plastics. The Starrett 20mm hole saw cuts perfect holes to a diameter of 20mm. Starrett have upgraded the teeth of the FCH2532, a new tooth form of 5 teeth per 25mm (5.5 TPI) provides faster, smoother cuts with reduced torque and bite. The teeth have been reinforced with cobalt, providing improved resistance to heat, abrasion and wear and tear. A durable, reliable tool ideal for long term regular usage. FCH2532 is the perfect hole cutter for usage with stainless steel and mild steel sheets, tubes or RSJ with a thickness of up to 3mm (1/8"). For usage with Starrett A1 Arbor Drill Bit Key Features of Starrett FCH2532 20mm Hole Saw: Cuts a 20mm diameter hole Smooth cutting, with minimal snag or bite. Recommended Stainless steel and non-ferrous metal cutting depth: 3mm Teeth per inch (25mm): 5.5 Teeth type: HSS Material: Steel, Cobalt Width: 20mm Hole saw depth: 41mm Arbor Type: A1 or A4 required (sold separately) Thread Size: 1 / 2-20 Manufactured in the UK View all Hole Saws View all Starrett If you just need some help, would like to take advantage of our Price Promise or perhaps have a large order to place. Give our team of professionals a call on 0203 994 5470, drop us an email at sales@electricpoint.com or use our Contact Form.