1 M series conveyor chains A2 2 High-quality alloy steel 3 CNC & automatic ... series conveyor chains ( pitch 40, 50, 63, 80, 100, 125, 150, 160, 200, 250, 300, 315, 500, etc.).2. Without rollers, with ... S small roller type, with P large roller type, with F flanged roller type3. ... to ensure delivery and lower prices. M series conveyor chains with A2 attachments