Dual-purpose design, easy installation simple setup suitable for various equipment; can be used with or without screws as needed, and placed at the bottom of appropriate devices. Usage: 1: Screws can be removed for use on flat-bottomed equipment. 2: Compatible with speakers and chassis brackets featuring M8 screw holes. Anti-skid rubber pads on top and bottom provides shock resistance, prevents slipping, and protects surfaces from scratches. Steel ball shock absorption, precision craftsmanship features two layers of aluminum alloy washers with a center suspended triangular steel ball for effective vibration damping. Compact size with enhanced performance designed for audio and video equipment to deliver precise vibration isolation and improved sound clarity. Delivers clean, clear sound with full and balanced audio reproduction. Versatile application suitable for amplifiers, speakers, speaker stands, shelves, and other audio equipment. Promotes balanced consistency in audio clarity and transparency. Color: Black Material: Aluminum and Rubber Package Contents: 1 set x Speaker shock-absorbing feet (4 pieces) Note: Light reflection and display differences may cause slight color variation between image and actual item. Measurement tolerance: +/- 1-3 cm.