... : Sliding Window Wheel Roller with Ball Bearing WU-30/10 (Doors & windows wheel, door wheel, nylon wheel, plastic wheel, furniture wheel, bottom wheel, roller wheel)Product Descriptions: ... PA,Nylon,PA66)Wheel Ø 20 mm (D) Wheel width 10 mm (T2) Load capacity 20 kg Bearing version Ball bearing 625-2RS Axle ... Website: http://chinafull.en.alibaba.com Sliding Window Wheel Roller with Ball Bearing WU-30/10