Electricians 11 Piece HSS Cobalt Bi-Metal 16-64mm Holesaw Set Premium Bi-metal material (M42 grade), impact and wear resistant for clean and accurate holes through wood, wood with nails, PVC, aluminium, metal and non-ferrous metals (brass, copper). Slotted body design for effortless plug removal. Razor-sharp precision set teeth with variable pitch tooth-configuration provide clean and accurate holes. High quality M42 grade Bi-metal material with 8% Cobalt for higher strength teeth and longer performance life. Cutting depth - MAX 38mm. Can be used on battery or mains, combi and impact drills As an expert in the industry, trust Surebuild SBHSSET1 to provide a clean and accurate hole every time. Made from premium M42 grade Bi-metal, this 11 piece set is impact and wear resistant, making it perfect for cutting through various materials. The slotted body design and razor-sharp precision teeth ensure effortless plug removal and precise holes with a cutting depth of up to 38mm. Suitable for use on both battery-powered and mains drills, this set is a versatile and long-lasting addition to any electrician's toolkit.