Bosch HDGPB AutoStart Pilot Bit for Diamond Hole Saws;

Bosch's hole saw product line, features the HDGPB6 Auto Start centering pin. This carbide-tipped centering pin centers the hole saw precisely and then it retracts to allow the hole saw teeth to engage the material, eliminating the need to pre-drill a pilot hole. With the Auto Start and Bosch's Diamond Hole Saws (sold separately), cutting holes in porcelain, ceramic, glass, limestone, granite, travertine, slate, or marble has never been faster or easier. Features: Spring-Loaded, Retractable Shaft, Engages material and maintains contact, allowing walk free cutting without a pilot hole Carbide Tip - For extremely long life, even in porcelain and granite Quick - Change Universal System For quick changeovers from diamond to bi-metal hole saws Unique Grind Geometry - Start holes on the mark, every time What's In The Box Bosch Diamond Auto Start Retractable Centering Pin (HDGPB6) .