ENHANCED DURABILITY - Constructed from stainless steel 303, these thumbscrews offer exceptional resistance to wear and corrosion, ensuring long-lasting performance in demanding shooting conditions. UNIVERSAL COMPATIBILITY - Featuring a standard 1/4'-20 thread, these replacement lock knobs are compatible with a wide range of DSLR camera cages, handgrips, and other accessories for versatile use. SECURE LOCKING MECHANISM - The 1/4'-20 x 11.5mm thread dimension provides a tight and secure fit, preventing slippage and ensuring your equipment stays firmly in place during operation. LIGHTWEIGHT DESIGN - Weighing only 0.9 oz (25.2g), these thumbscrews add minimal weight to your setup, maintaining optimal balance and comfort during extended shooting sessions.