Specifications

1.The service life of O-Ring or X-Ring Chain is greatly depended on the wearing between the pin-shaft and the sleeve. The "O" ring or “X” ring will greatly reduce the wearing and thus prolongthe service life by 3-5 times.

2.Model:420V,428V, 428VM,520V, 525V, 530V, 530VM, 630V, 630VM,428V-X,428VM-X,520V-X,525V-X,530V-X,530VM-X,630V-X,630VM-X,420HZ,428HZ,520NZ,525HZ,530HZ,630HT

3.Color:self,gold,nickel,blue,red,orange,green,yellow,pink etc.

4.Certificate of Quality: ISO 9001:2000,SGS

5.The grease is made in USA.

6.O-ring and X-ring are made in Tianwan.