Improved design with ball bearing, no more squeaking or getting stiff when you open or close the door. Flexible bearing, very quiet, built-in stainless steel ball High quality corrosion resistant stainless steel material. Size: 99x73mm(thickness); Package: 4x door hinges, 32x screws. Qrity 4X Door Hinges, Home Door Hinges Stainless Steel Ball Bearing Mute Hinges with Screws Stainless steel material can be used for a long service life. Fitment for house door or window, cabinet, toolbox, etc. Butt hinge is normally used for doors. Specification: < p>Improved design with ball bearing. No more squeaking or stiffness when you open or close the door. Size: 99x73mm; Material in high quality corrosion resistant stainless steel. Soft bearing, very quiet. Integrated stainless steel ball.