Sliding Door Roller Cabinet Pulley Wheel Nylon Material for Durability DESCRIPTION Features: * brand new and high quality. *Made of high quality Nylon material, and practical to use. *Two size available : 30mm , 40mm *Provide smooth sliding. *Ideals for small projects and movable furniture. *For repairing or replacing old, broken sliding pulley. *Commonly used for small projects and movable furniture including dressers, crates, chairs, under bed storage, shoe bins, toy bins, cabinets…