Description of Advanced Adjustable Sliding Roller Assembly Bearing: Optimize your Efficiency
★【Includes】 Includes 2 x Sliding Patio Door Roller,used for replacing damaged or missing roller assemblies on sliding patio doors. ★【Standard Size】 The roller assembly contains 5/16-inch wheel thickness (width) x 1-1/4-inch diameter, 5-3/4-inch hole centers. This roller assembly has a minimum collapsed height of 1-1/2 in. ★【Solid Construction】High quality radial ball bearings still working after 100,000 cycles for 2 rollers bear 120KG. While others may use the bearings made from Carbon Steel W/O heat treating, we insists all bearings made from Heat Treated Bearing Steel. ★【Easy to Install】Remove damaged or missing tandem roller assemblies in patio sliding glass doors , then install new sliding door roller assembly. ★【Lifetime Guarantee】: If the product did not meet your expectations or if you need a replacement please do not hesitate to contact us.