S-WORKS POWER CRANK DUAL trainer The Park Tool BBT-32 is

The Park Tool BBT-32 is compatible with bottom brackets with 20 splines and a diameter of 32 mm

which guarantees a secure (threaded) connection on both Presta and Shrader valves

packing plenty of fun into a bang-for-bike package

whilst spinning on the new Dual DU bush system

S-WORKS POWER CRANK DUAL trainer The Park Tool BBT-32 is172. 5mm only. Regardless of your level or experience on the bike, there is no better way to optimize your training and performance than with a power meter. Fortunately,Specialized has combined incredibly light and stiff S Works carbon crank with a dual power meter to create the lightest (440 g 172. 5 mm) and most accurate power meter. The double sided S Works Power Cranks use separate strain gage systems to measure the force generated by each leg