410 (1/2″X1/8″) Pin Length:9.20mm Tensile Strenght(Min):840kgf Pin Power(Min):90kgf Bushing Power(Min) ：40kgf Color of Plates(Outer/Inner):Dark Blue/Dark Blue Compatible:Single speed bikes,Garage doors
M30 (1/2″X3/32″) Pin Length:7.80mm Tensile Strenght(Min):820kgf Pin Power(Min):90kgf Speeds of Sprocket:6 Color of Plates ：Brown / Brown Compatible:12-18 Speed Index System
