Park Tool BBT-RS Bottom Bracket Tool Retaining System 31.6mm x 20mm offset Rugged durability comes naturally to

Rugged durability comes naturally to the Eagle T-Type direct mount chainring

A key accessory for chilly starts or changeable weather

tapered nose-to-wing transition

Formulated to work without solvents or abrasive chemicals

Handmade in Restrap's Yorkshire workshop

Park Tool BBT-RS Bottom Bracket Tool Retaining System 31.6mm x 20mm offset Rugged durability comes naturally toBottom brackets have some of the highest torque specs of any component found on a bicycle. Despite this, some bottom bracket cups feature tool fittings that allow mere millimeters of engagement, which can be a problem when attempting removal or installation. Solution: the Park Tool Bottom Bracket Tool Retaining System. Used in conjunction with nearly any Park Tool bottom bracket tool, the BBT RS uses a spring based tension system to apply consistent,