HSS A/C Extension: 12" Fractional

31/64″ x 12″ HSS Aircraft Extension Drill Bit

HSS A/C Extension: 12" Fractional

15/32″ x 12″ HSS Aircraft Extension Drill Bit

HSS A/C Extension: 12" Fractional

27/64″ x 12″ HSS Aircraft Extension Drill Bit

HSS A/C Extension: 12" Fractional

13/32″ x 12″ HSS Aircraft Extension Drill Bit

HSS A/C Extension: 12" Fractional

23/64″ x 12″ HSS Aircraft Extension Drill Bit

HSS A/C Extension: 12" Fractional

11/32″ x 12″ HSS Aircraft Extension Drill Bit