Plastic flexible chains, 40P Materials:POM +SS chains Pitch:12.7mm Width:20mm 60P Materials:POM +SS chains Pitch:19.05mm Width:30mm Double rows, and plastic pins for the above items are possible. We are manufacturer professionallyin modular belts , plastic top chains, stainless steel top chains, and other conveyor components. We have abtained the quality certificate of ISO 9001:2000, and our products have been sold to Europe, Middle East, America and many other coutries and regions.