kwb Hole Saws & Arbors Hole saw 610417 - KWB 499175, The kwb 499175 Hole Saw is a 75 mm drill attachment made from C45 steel. It is designed for precise cutting in wood, plastic, and plasterboard materials. Suitable for professional and DIY applications, it provides efficient and clean cuts. kwb 499175 Hole Saw 75mm C45 Carbide tipped universal for hard materials