Square Taper Bottom Bracket BUCKLOS BSA 68/73mm Road Bike Bottom Bracket Fit SRAM DUB 29mm Spindle Threaded Bicycle External Bb I4383525967 Shimano Sealed Bottom Bracket BUCKLOS Road Bke Bottom Bracket BSA 68/73mm BB DUB 29mm Spndle... 【Light weight】The overall mass is reduced, effectively improving the overall efficiency and performance of the ride 【Seal bearing】Smooth seal bearing, smooth riding SRAM Bottom bracket DUB English/BSA 68/73 mm 【Material】CNC aluminum alloy material, precision thread, durable This is a brand new adapter for concrete coring drills. It adapts 1-1/4"-7 threads used by most concrete core drills to 5/8"-11 which some coring bits take
