Check the listing for details. Archery D Loop, 2 Set Compound Bow Metal U Nock D Ring Nocking Release, Black. Condition: New with tags. Listed at 16.05 USD. The archery D loop assists the archers by providing a stable point and maintaining a consistent position when pulling the bowstring, which leads to more accurate and consistent shooting results.SpecificationColor: BlackMaterial: MetalD Loop Size: 19x24x5mm / 0.75x0.94x0.2 inch(Lx WxThick)Screwdrivers Length: 5cm / 2 inchPacking List: 1 x Archery D LoopAdvantageThe nock release D loop is made of metal to withstand frequent use, keeping your bowstring in optimal condition. Lightweight and portable, it is suitable for carrying spare loops or using multiple bows.The metal D-loop ensures consistent draws and releases, prevents slipping or string slippage, offers a balanced point of reference, reduces negative impacts on the bowstring, minimizes damage, and extends the lifespan of the bowstring.