Durable Stainless Steel: Crafted from high-quality aluminum alloy, these tripod screws are rust-resistant and built to last. The electrically treated surface is wear-resistant and anti-oxidative, ensuring a long service life. Lightweight and portable, they won't easily rust. Standard Thread Sizes: Features 1/4\" and 3/8\" threads, allowing you to switch between different sizes to suit various accessories. Includes 5 x 1/4\" to 3/8\" male thread adapters. Easy Installation: The camera tripod screws are lightweight (only 80 grams), simple in design, economical, and easy to install. Convenient for outdoor photography. Perfect Camera Accessories: Ideal for mounting on DSLRs, tripods, monopods, ball heads, flash brackets, and shoulder rigs. These camera external threads and sleeve adapters are made to international standards and are compatible with most photographic equipment. A Photographer's Must-Have: These threaded adapter screws are incredibly practical. A necessary and professional camera accessory for connecting your camera. Advanced photographers will appreciate the importance of having this set of standard parts to solve many photography challenges. Specifications: Material: Aluminum Alloy Thread Size: 1/4\" -20 to 3/8\" -16 Color: Silver Total Pieces: 5 Application: Lamp holder conversion screw Package Includes: 5 Standard 1/4 to 3/8 inch metal male converters