Birzman Piston Release Tool Jagwire Max Sprockets: 11 32t or 12 36t Max Sprockets: 11 32t or 12 36t CM 145 XXS 150 XXS XXS XS S S M M L L XL XL XL 155 XXS XXS XS XS S M M L L L XL XL XL 160 XXS XXS XS XS S S M M L L L XL XL XXL XXL XXL 165 XS XS S S M M M L L L XL XL XXL XXL XXL 170 XST XST S S M M M L L L XL XL XL XXL XXL 175 XST XST ST ST M M M L L L XL XL XL XXL XXL 180 ST MT MT MT LT LT LT XL XL XL XXL XXL 185 MT MT MT LT LT LT XL XL XL XXL XXL 190 MT MT MT LT LT LT LT 195 LT LT LT LT KG 30 35 40 45 50 55 60 65 70 75 80 85 90 95 pair with a Birzman Disc Brake Piston Pusher (BM20 DBPP) or Double ended Piston Pusher (BM23 DPP) when retracting the pistons To prevent the pistons from falling out of the calliper