- Tripod adapter screw: iron construction provides firmer, more stable camera mounting and secure engagement with tripod adapters for reliable operation. - Knurled camera mounting screw: special design and refined workmanship deliver a durable replacement for worn or broken original mounting screws; knurled grip allows hand tightening without tools. - Quick-release knurled screw: robust build with practical, professional feel; enables fast, tool-free mounting and dismounting of the camera. - Camera screw adapter thread: 3/8 inch standard tripod screw; simplifies precise installation and offers broad compatibility with most tripod adapter holders. - Use scenarios: ideal for replacing worn screws on older tripods; suitable for upgrading DIY rigs that require secure, hand-tightened fasteners; useful in field or studio shoots where quick camera changes are needed.