Torsion Spring Max Weight (Lb.) 265 lb Diecast Silver Diecast Finish Length (In.) 4 1/2 in Height (In.) 1 17/32 in Width (In.) 4 1/2 in Depth (In.) 4 1/2 in Inside Dia 1 in Outside Dia 4 1/2 in Wheel Diameter 4 1/2 in Max Wheel Dia (In.) 4 1/2 in Roller Width/Dia (In.) No Roller Surface Mounting Mounting Hole Size (In.) 1 in Number of Wheels 0 Diecast Hardware Included For Use With Sectional Garage Door