Suggestion: Using for door that thickness is above 3cm
Included a 201 stainless steel screw and an Allen wrench that allows for adjusting the spring tension by rotating the hinges' axis in a clockwise direction.
Material of Door Hinges and Screw: 201 Stainless Steel, surface brushes
Max 10N spring Tension, 305 degree max rotation angle, auto closing door design and adjustable Spring.
Size:3 x 3-3/8 x 3/4 Inches (76 x 85 x 18mm), Thickness: 2.9 mm, Load 50 lb (25 Kg)