A Ball-Bearing Hinge is a hinge equipped with ball bearings to reduce friction. They are ideal for any interior door. If you have any issues with your doors squeaking today, our ball bearing hinges are sure to solve that problem. Hinges sold in pairs unless otherwise indicated. Residential Hinges are ideal for Door Thickness of 1 1/4" - 1 3/4". Most sizes available in the following finishes:Satin Nickel, Oil Rubbed Bronze, Bright Brass, Antique Brass, Antique Nickel, Satin Chrome, and Polished Chrome.