Product Name : Conveyor Roller; Size Type : 25mm x 300mm Shaft Diameter : 25mm / 0.984inch; Shaft Length: 300mm / 11.8inch Shaft Diameter: 7mm / 0.275inch Total Length: 330mm / 12.9 Color: Silver Material: Iron + Galvanized Description: The steel transmission roller is for assembly line use, helps to transport things easily and quickly. Widely used in paper making, packaging machinery, conveying equipment, etc., for efficient work. A great choice to replace your damaged roller. Package Contents: 5 x Transmission Roller Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.