Satin chrome finish on steel material Ball-Bearing Hinge 4-1/2\” x 4-1/2\” size hinge Designed for 1-3/4\” thick doors – Use on either wood or hollow metal doors & frames Five knuckle, full mortise design 50 lbs safe working load each hinge Sold as one hinge in pack Includes flat head screws Product Description Specs This 4-1/2\” Satin Chrome Finish Ball-Bearing Hinge is more durable & longer-lasting than standard hinges. Equipped with two permanently lubricated ball bearings for smoother & quieter operation. Template screw hole location for use on either wood or hollow metal doors & frames. Includes non-removable pin for added security. Five knuckle, full mortise design with square corners. Conforms to ANSI/BHMA Grade 2. For use on interior or external medium weight doors of average frequency. Size: 4-1/2\” x 4-1/2\”. Includes flat head screws. National Hardware Model No. N236-010. Product Overall Length Size of Hinges Model # 4-1/2\” Satin Chrome Finish Ball-Bearing Hinge 4-1/2\” x 4-1/2\” size hinge DIB-248775 | N236010 For California Residents: WARNING: Cancer & Reproductive Harm – www.P65Warnings.ca.gov WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood