Bargain Price but quality product. Carbon Fiber "wrap". Whisper V1 Suppressor Silencer Moderator. All weather alloy casing. Stainless steel springs and 4 alloy cone baffle system. Unscrews for easy cleaning. Compact but heavy duty construction. Suitable calibres .17, .22LR, .22 Mag. No issue if you inadvertently run high velocity through this, its very solid. Colour; Black carbon fiber "wrap". Length; 150mm Diameter; 26.7mm Weight; 116g Select which one of the two thread options you want; 1) 1/2"-20 2) 1/2-28