Ningbo Penk Intelligent Technology Co.,Ltd, Was founded in 1990'S, Specializing in producing bicycle and electric bicycle parts. The three main products are brake sets, Derailleur systems ,Pedals and more than 100 other related accessories
1/2“X1/8” Inner chamfering
Pil length: 8.7mm
Tensile stength: 850kgf
Pin power: 90kgf
Bushing power:Nil
Color(outer/inner): CP/CP
(half-silver; silve;half-good are available by request)
Electric bikes: inside changeable speed system
