Bosch SDS-Plus rotary hammer core bits are designed for core drilling with smaller hammers with a core body length of 4-3/8-in. and a useable cutting depth of 3-in. core bits are sold separately and still need the center pin， guide plate and shank to get the most out of your bit. Bosch SDS-Plus rotary hammer core bits are designed for core drilling with smaller hammers.
Extension for thin wall core bit
SDS-Plus shank
1-piece
13 in. extension
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