Window Wheel,Window Sliding 1)material:iron ,ninon 2)finishing:plating /spray 3)colour:according to customer required Roller, wheel, window roller, window wheel, door roller, door wheel, sliding roller, sliding wheel for UPVC/Aluminum window door1.Competive price .2.Nylon wheel ,iron frame.3.Run smoothy.4.real bearing.5.orange color or according to you demand .6.surface treatments:powder-coated ( ...