530 roller chain 1)OEM offered 2)Applicable scope :many models ... 428 1.56mm * 8.4g * * * 428H 1.9mm * 9.56g * * * 530 2.2 15.875 15.6g * 63 * 630 2.42mm ... or OEM are accepted 1)Type :420,420H,428,428H,530,630 and so on2)Rivet:support 4sides or 2 sides ... feel free to contact us if you have any questions 530 roller chain