【No Noise Hinge】 It won't make any noises, Forever eliminate annoying squeaking from your doors 【Easy to Install】 Compared with traditional hinges, it is not necessary to groove in the door and door frame and can be installed directly 【Good Quality】 Made of 304 Stainless Steel, you won’t have to ever think about needing to replace them. These non-noice hinges are meant for mid-high wood doors 【High Load Bearing Hinge】 Hinge maximum bearing: 50 kg. Ball bearings ensure smooth, even, no-wobble and no-scratch movement 【Suitable Size】 6 pcs combined ball bearing hinges, 4” x 3”, 3mm thick,, Manufacturer: Shun Yingtong