1pcs V/U Nylon Grooved Rollers 30mm Heavy Duty Sliding Door Rollers With Stand Smooth And Silent Grooved Roller Feature: - new and high quality - Made of high quality materials, durable - Bold and thickened design on both sides of the wheel, tightly trimmed and wear-resistant - Double bearing design, refined bearing steel flexibly rotates and the ball rotates more smoothly - The whole body is waterproof, the shell is high-tech galvanized, effectively rust-proof - The products are all solid and super load-bearing. - Reinforced load-bearing of the base. The base is made of 45# steel, which has good corrosion resistance, thickened and widened -piece shell - Wheels are made of high-quality nylon material, thickened and weighted - Smooth and delicate surface, effectively reducing resistance, more wear-resistant and quiet Specification: - Quantity: 1pcs - Color as shown - Model: V-30MM, U-30MM (optional) - Features Smooth and silent - Name track pulley - Material: Nylon+45# - Surface: Galvanized Package Included: 1*Nylon grooved roller (optional) Notes: 1. Due to various factors such as display brightness and light brightness, the actual color of the product may be slightly different from the website picture. 2. Please allow a slight deviation between the data and the manual measurement. _x000D_