... Large roller 3 High-quality alloy steel 4 Top roller in U attachment 5 Automatic & CNC 1. Pitch125 roller conveyor ... : high-quality alloy steel4 There are top rollers in the U attachment on the oterside link. Different kinds of attachments are available, such as top ... roller, K1, K2, A1, A2, extend-pin, etc.5. Except manufacturing equipments of the chains ...