About This NO PRE-DRILL - These hinges do not require pre-drilling, making installation quick and easy. Just align and screw them in place SOFT CLOSING - No more door slamming noises. Equipped with a soft-close damping system mechanism which pulls the door closed for a smooth silent motion, protects your furniture with care PACKAGE CONTENT - 4 pack (2 pair) of 90° slow close hinges, complete with installation screws. Don’t forget to read the instruction before installing DIMENSION - This slow close hinges is 4 x 1-11/16 inch( 102 x 43mm ); WEIGHT: 98g * 4; Type: Non-Mortise Concealed 90 Degree Spring Hinge; Opening angle: 90 degree PREMIUM MATERIAL - Each hidden hinge made of solid cold-rolled steel with Zinc-plated finish and wear-resistant Overview Material : Alloy Steel Brand : TamBee Product Dimensions : 4"L x 1.7"W Finish Type : Nickel,Plated Mounting Type : Door Mount Hole Count : 9 Weight Limit : 20 Pounds Unit Count : 4.0 Count Manufacturer : T&B Inc UPC : 689771620312