Bosch HC8510 2 in. x 7 in. SDS-MAX Rotary Hammer Core BitBosch Model: bshnhc8510
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Product Features & specs :
Bosch HC8510 2 in. x 7 in. SDS-MAX Rotary Hammer Core Bit
- Core bits go beyond the range of standard bits and allow smaller hammers to drill larger holes
- Bosch SDS-max rotary hammer core bits are carbide tipped with an integral shank for better power transmission
- Maximum core size is 4 in. deep
- 2 in. x 7 in. SDS-max Rotary Hammer Core Bit - HC8510
It helps to clean the core out of the bit in small increments; if you let the core extend all the way to the base of the bit, clearing it out can be tedious and time-consuming.
The only note of caution I'd like to make is that when a bit of this size or larger gets more than an inch or so into the hole, it's much more prone to grabbing than is a smaller-diameter bit. One time it grabbed hard and nearly twisted my arms off. I had to be careful to take small bites and keep a relaxed grip on the rotohammer.