Suitable for 2040V series aluminum profiles,adjust the sliding smoothness by adjusting the hex eccentric column Product Name: Modular Y Carriage Plate Material: Metal and Polyformaldehyde Main Color: Black Packing Weight: 425g Package Content: 1pcs Y Carriage Plate with small plate 6pcs pulley 3pcs hex eccentric column 3pcs isolation column 6pcs M5x30mm screw 6pcs M5 Locknut 1pcs Open end wrench 8mm to 10mm 1pcs Allen-key