This speaker isolation foot is made of , which can withstand use. Features the aluminum alloy and rubber material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This speaker isolation foot will make the repair and fix easier and smoother. Features -Color:Black -Material:Aluminum alloy, rubber -Size:4.00X4.00X1.10cm/1.57X1.57X0.43in Temperature range: -40 ~ 240 degree centigrade Bearing: up to 150lb - Equip your stereo speaker with isolation feet that absorb most vibration and resonance. - A simple accessory for amplifier isolation and room treatment that effectively reduces vibrations in even the most stereo equipment. - These pads for small speakers let you . Note the more pronounced improvement in the high-mid to high frequencies, resulting in a crisp and clear sound quality from your audio setup. - Speaker feet provide up to 150 lbs of weight support for your subwoofer, speakers, CD/ and cassette recorders. - This isolation foot is produced by a good craftsmanship and has a strong structure, can use it with peace of mind. Package list: 4 x speaker isolation pads