国产99久久精品一区二区,狠狠操.com,国产性片在线,草草影院在线

First slide

Products details

tooth shape chain

Products details:

The pitch is 6.35-12.7mm, the specification has 5 pieces, 7 pieces, 8 pieces and 9 pieces, 11 pieces, 13 pieces and other combinations.The gear chain has the characteristics of smooth transmission, no noise, wear resistance and high reliability, and is suitable for transmission with high speed or motion accuracy.Among them, the 6.35mm tooth chain is rated as a national new product.