Height: 4 x 3.2 x 0.8 inches. Please make sure if the size you need. Material: 304 Stainless Steel, CNC machined. The weight bearing capability for 4 spikes is about 440 lbs (200kg). With 3M adhesive, it's easy to stick spikes to chassis' without drill holes. Suitable for speakers, CD players, DAC, turntable, amplifier, DAC Recorder etc. Package: 4 pcs spike feet & 4 pcs base mats & 4 pcs 3M double-sided adhesive. Dimensions: 4 x 3.2 x 0.8 inches.