Easy to Install: The crossbar design D rings is ended by screw, which is convenient and easy to install and use. Install simply with a slotted screwdriver（included） High Quality Car Key Ring: Made of Gr5 titanium alloy, utral-lightweigt (only 0.15 oz / 4.2 g), higher hardness, Working Load Limit: 100 kg / 220 lbs. Not for climbing Smart Design for D Ring: Suitable for car fob or something thick and narrow opening. One-way screw, bolt design, rubber non-slip gasket, safe and not loose Multi Application: Use of connection accessories; Suitable for most Key fob, Keychains, Flashlights, Knives, DIY leathercraft purses What You Get: 1 pcs titanium 2/3 inch Black d rings,1 pcs screwdriver