Bargain Price but quality product. Whisper V2 Suppressor Silencer Moderator with a carbone fibre pattern wrap. All weather; alloy body with alloy mono core 8 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 Length; 150mm Diameter; 34.5mm Weight; 168g Select which one you want; 1) 1/2"x20 2) 1/2"x28 3) 5/8"x24