Features: Universals for action cameras, this alloy T head thumb screw features knob for toolless installation, eliminating the need for multiple accessories and ensuring mounting. from aluminum alloy T head and stainless steel bolts, it provide superior strength, corrosions resistance, and antislip grip, outperforming standard plastic screws in harsh conditions. for sports enthusiasts, travel photographers, and outdoor adventurers who demand secure and versatile camera attachments for dynamic activities. Perfect for demanding environments like beaches, mountains, skiing, or cycling, where quick adjustments and performances for capturing high action moments. plastic metal blend, it enhances portability and ease of use, making it a must have accessory for seamless action camera setups. Specifications: Materials: plastic + metal Package Includes: 5pcs Knob Stainless bolts note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.