ITEM NAME:Amplifier Feet Spikes Mats Fenestrated Feet Pads Black, 20x8mm, Easily Description: Diameter:20mm. Height:8mm. Material: Solid Aluminum CNC Machined. Mounting Screw Hole Diameter:3.5mm. Suitable for most of pointed spikes, Hi-Fi, speakers, turntables, computers, printers and other sensitive equipment. Package Includes: 4 Pieces Speaker Isolation Feet Pad SKU: DMO0014029868008047.4 Pieces Speaker Isolation Feet Pad. People always bought together with. SKU: DMO0014029868008047.