the heavy-duty D-type buckle is forged with TC4 titanium alloy, which is sturdy and can withstand high strength, super hardness, corrosion resistance and high temperature resistance, lightweight, stable structure and not easy to deform Comes with a mini screwdriver for installation/disassembly. Unscrew the screws when using, insert the car or door key to tighten, not easy to fall off and no need to worry about losing Specially Used For Connecting Car Keys: the horseshoe buckle D-type buckle is used to hang household keys and car keys. It can solve the problem of difficult insertion of car wide-hole key chains through the crossbar connection, making it convenient to carry keys, EDC tools, etc. when going out Metal Texture: CNC numerical control process precision processing, surface frosting process treatment,and not easy to change SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please contact us.We will provide after-sales service .