1 x 1/4 inch camera mounting screw, adapter screw for camera strap D-ring 1/4 inch screw for carrying strap, adapter screws set for camera strap D-ring, Qr plate and tripod accessories. 1/4 inch screw: this D-ring camera screws can attach all types of quick release collars, wrist straps, sling or lanyards, attach your carrying strap securely so you can always attach your camera without without the without comfort. Process: The camera bayonet screw is manufactured in large standardized machines and subjected to various processing techniques such as polishing and grinding. The thread is clear, even, clean, easy to use, beautiful and firm. Easy to use: the 1/4 inch screw mounting screw is lightweight and compact, so you can conveniently assemble your photographic products and accessories and also easy to carry and use. These high quality captive screws allow you to install different types of plates for direct mounting into the base of your camera equipment. Easy installation: 1/4 inch screw can be attached to any device with 1/4-20 (tripod) mounting thread, no other tools required. An adapter (not included) is required for mounting on 3/8 threads. Application: These tripod screws can be attached to a variety of different photo equipment and can be used for all QR quick release plates, tripods, monopods, telescopes, ball heads, lens clips, camera tripod quick release plates and other equipment.