General description Manufactured from high-quality HSS with 8% cobalt Bi-Metal, the Sealey TWHS3 Thin Wall Hole Saw Set is ideal for drilling into thin metal. The teeth are profiled with a progressive pitch, ensuring a smooth, burr-free finish. This set includes a hex shank for compatibility with any standard-sized drill chuck, a depth stop to prevent over-drilling, and a system designed for efficient waste removal. Technical specifications Material: HSS with 8% cobalt Bi-Metal Sizes: 20mm, 25mm, 32mm Other information Teeth profiled with a progressive pitch for a smooth burr-free finish Hex shank for use with any standard sized drill chuck Depth stop to prevent the user from drilling too deep System designed for efficient waste removal