- Set includes 1/8″, 5/32″, 3/16″, 7/32″ and 1/4″ Drill Bit Adaptor
- Each drill bit adaptor accepts a range of sizes .005″ larger to .010″ smaller than listed
- Special hex socket included to facilitate replacement of HSS Twist Drill Bit
- Engages Centrotec chuck for extremely close axial alignment of bit and output shaft of drill
- Reduced run-out and maximum torque transfer between drill and bit





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