Its end point is the ground, which can minimize harmful vibration. It can eliminate the pollution between the ground and the speaker and obtain pure and natural sound effect. Made of aluminum alloy material with pure copper tip, it is corrosion-resistant and durable. The total length of the nail is 20mm. The diameter of the gasket is 23mm and the height is 4mm. And the height of the product (nail and gasket) is 23mm. It is used to pause acoustic feedback from speakers and subwoofers. By installing them, your turntable, CD Players, amplifiers or other audio components are separated from vibration. Therefore, the tone will be more concentrated and compact. Moreover, the noise transferred from the floor to other rooms will be much less. It can be used for HiFi speaker or speaker frame. It can be placed under the speaker, or under the shockproof plate and shockproof frame. Item Name: Foot Nail Material: Copper,Aluminum Alloy Color: Black Model: M23x20 Features: Shockproof, Anti-abrasion, Anti-slip Size Details: Nail Total Length: 2cm/0.79" (Approx.) Gasket Diameter: 2.3cm/0.91" (Approx.) Gasket Height: 0.4cm/0.16" (Approx.) Nail and Gasket Total Height: 2.3cm/0.91" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Foot Nail 1 x Gasket 2 x Double-Sided Adhesive