... -arc welding. 7.Chainwheel&Crank: 12"--24T*89, 16"--28T*102, 20"--32T*127, ED/CP 8.Crank ... TRP/ RUBBER FORM 12.Rim: Alloy rim or steel rim, CP,0.95mm,12"-20" 13.Freewheel: 12"--16T ,16"--16T , 20"--18T ... 14.Chain: 12"--60L, 16"--70, ... CKD 4 SETS/SKD 85% ): 12"----2400/1150 SETS 16"----1900/800 SETS 20"----1500/580 SETS Other parts are ...