Park Tool BBT-29 Bottom Bracket Tool Folding When you combine superior shell

When you combine superior shell engineering with a Junior Last and Progressive Cuff Design

and rides smooth and fast

semi-adjustable strap dividers deliver the perfect fit regardless of head shape

Unlike upper body harnesses

Please make sure your pedals have visible mounting points or a removable reflector for mounting prior to purchase

Park Tool BBT-29 Bottom Bracket Tool Folding When you combine superior shellThe BBT 29 is a double ended bottom bracket wrench designed to fit 16 notch bearing cups with an outside diameter of 39mm (e. g. Shimano Dura Ace 9000 series and XTR 980 series) as well as 16 notch bearing cups with an outside diameter of 48. 5mm (e. g. FSA MegaEvo).