Bahco Superior(tm) 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 3833-70-C Carded Size: 70mm.