... kinds 2.high quality 3.competitive price COIL SPRING COMPRESSION SPRING SPRING(1) THIS SPRING IS APPLIED FOR BICYCLE MACHED MANY OTHER ASPECTS ... (2) WE ALSO SUPPLIER MANY OTHER SPRING ,LIKE COMPRESSSION ,SPRIAL,BELLIVELL ,WIRE FORMED SPRINGS WITH DIFFERENT ... ) THE BICYCLE MATCHED SPRINGS,THE AUTO SPRINGS,THE CONTROLLED SPRING ,THE COMPRESSION SPRINGS ETC.PLEASE CONTACT ME IF YOU ...