• Package contents: 2 adjustable anti-vibration fasteners for bed headboard. • Screw adjustment: 33-44 mm (0 screws), 47-64 mm (1 screw), 64-87 mm (2 screws). • High-quality material: metal base with self-adhesive tape and EVA pad, which does not damage walls or furniture. • Noise and shake reduction: allows movements in the bed without generating noise or shaking. • Easy to install: simply stick the anti-vibration tool in the desired position without the need for complicated operations. • Versatile use: ideal for any object with an unstable center of gravity or that shakes easily. • Product dimensions: 1 cm wide, 0.5 cm high, and 8.7 cm long.