Blackburn Trainer Axle Adaptor Kit M12 X 1.0MM & M12 X 1.75MM drumbeat21-616 Polycarbonate shell

Polycarbonate shell

gloves or extra calories to get you through long base miles

- Reflective logos and highlights

fit system with pinch-guard buckle provides an easy way to fit your kid's helmet quickly and securely

Unique to the MTC-30 is a 8 mm/15 mm box end wrench: the 15 mm end fits most solid axle nuts

Blackburn Trainer Axle Adaptor Kit M12 X 1.0MM & M12 X 1.75MM drumbeat21-616 Polycarbonate shellTRAINER AND TRAILER ADAPTER KIT 1. 75MM Our thru axle conversion kit can replace the original thru axle on most mountain bikes, to allow for trainer usage. This kit will also allow the installation of a Copilot trainer hitch for most thru axle bikes as well. Works on bikes with 1. 0 OR 1. 75 thread pitches, and hub widths from 135 148mm. HOW TO CHOOSE Choosing the correct axle is simple. First, research which axle spacing your bike utilizes (135, 142