Comimark 20 Set Bicycle Bike Metal Chain Master Link Connectors Repair PartsBicycle Bike Metal Chain Master Link Connectors Repair Parts100% brand new and high qualityProduct Name:Chain Master LinkOverall Size(Approx): 21 x 8.3 x 11mm(L*W*H)Roller Pin Diameter(Approx) : 3.5mmBetween Inner Plate Width: 11mm Material : MetalColor : As showNet Weight ..