1 Pitch125 roller chain 2 Large roller 3 High-quality alloy steel 4 Top roller in U attachment 5 Automatic & CNC 1. Pitch125 roller conveyor ... chain2. Large roller. We have various rollers,such as small roller, large roller, Flanged roller, etc.3. ... link. Different kinds of attachments are available, such as top roller, K1, K2, A1, A2, extend-pin, etc.5. ...