stainless steel roller chain: 1.304 material 2.316 material 3.competitive price 4.good quality roller chains in carbon ... ,160,180,200,240,04B,05B,06B,08B,10B,12B,16B,20B,24B,28B,32B,40B,48B ... ) chains are also available.roller chains,transmission chains,industrial chainsdriving chain,heavy duty chain:1advanced technology, advanced equipment2high ... . American standard 50-1R stainless steel roller chain