Replace workbench rollers: 305784005, 306784001, 305784001, 524820001, 089041054704. 7 inchCeramic Tile Saw Models: R4030 Ceramic Tile Saw, R4030S 7inch Field Ceramic Tile Saw with Laser, R4 031 Ceramic Tile Saw, R 40311 Ceramic Tile Saw, DT180EVO. This product is made of high-quality materials, enhancing durability and practicality. The silent bearings on both sides provide you with a noiseless working environment. The product is flexible in operation and can load up to 100 kilograms. Color: Black Material: metal+plastic Package Contents: 4 x Tile Saw Roller Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.