Bosch SDS-plus thin-wall core bits are optimized for drilling with smaller hammers. Core body range is 1 In. up to 4-3/8 In. with a 3 In. usable cutting depth. Extension plus bit beyond 8 In. should not exceed 600 RPM.

• Core bit extension
• 13In. extension, SDS-plus
• Screw core bit onto shank
• Works with thin-wall core bits, 1-1/2 In. or larger