Bahco Superior™ Multi Construction Holesaws have carbide tips and are capable of cutting through brick and ceramic tiles, laminate, fibreglass and hardwood. The tooth tips consist of a carbide round rod which is fusion welded to the back material, the tip is then ground to its final shape with a 5° positive cutting angle. They have a low friction coating that minimises heat generation and wide gullets for effective chip removal. They fit all power drills, both stationary and portable.Bahco Multi Construction Holesaw 3833-20-C Carded Size: 20mm.