stainless steel roller chain: 1.304 material 2.316 material 3.competitive price 4.good quality roller chains in carbon steel and stainless steel.specifications ... ,60,80,100,120,140,160,180,200,240,04B,05B,06B,08B,10B,12B,16B,20B,24B,28B,32B,40B ... )Mutual development,mutual benefits. American standard 50-1R stainless steel roller chain