2 Sets Heavy Duty 360 Rotating Hidden Bookcase Hinge Secret Door Pivot Hinge Kit 304 Stainless Steel Application It is suitable for wooden doors, aluminum framed doors, cabinet doors, hidden doors, etc. with a weight of up to 330lbs. Specification Material: 304 Stainless Steel Color: Silver Surface Treatment: Brushed Style: Heavy Duty Mounting Type: Door Mount Number Of Pieces: 2 Sets Applicable Door: Within 150kg/330lbs Applicable Screw Specifications: M5 Package Size: 20*15*10cm/7.87*5.91*3.94' Upper Size: 130mm*25mm/5.12"*1" Lower Size: 105mm*25mm/4.12"*1" Hole Diameter: 6mm/0.23" Gross Weight: 1.5kg/3.31lbs Net Weight: 1.2kg/2.65lbs Package Included 2 Sets*Door Pivot Hinges Notes Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before you place the order.