About this item High Quality: This speaker spike is made of carbon iron with polish and second time plating, not easy to fade and oxidation. Its surface is smooth without any burr, delicate appearance, and comfortable hand feeling. Adjustable Height: The speaker spike is designed with height fine-tuning balancing nut, able to adjust the height. Wide Application: The speaker spikes are suitable for HiFi speakers, speaker frames, amplifiers, CD DVD players, turntable recorders, chassis, instruments, etc. Function: The speaker shock base pad is used between spike and ground, to minimize the harmful vibration. Package Includes: 4PCS Black Speaker Spikes + 4PCS Speaker Spike Pads. Size: 1.57 x 0.79 x 1.57 inches.