Hahaemall 13FT Modern Exterior Stainless Steel Brackets Sliding Barn Double Wood Door Hardware Track Roller Wall Mounted Closet Set Main Material: High quality carbon Steel Surface: Black frosted, corrosion protection Stopper: Advanced spring design. Roller bearing: High purity bearing steel Gcr15, wear-resisting ensure the stability of the move and the wheel's fluency. No noise. Passed the test of opening - closing: 120000 times Warranty : 5 years If you have any other ideas, please advise. We accept custom-made. Fedex international shipping, 3-7 business days' delivery. No Tax.