ENHANCED DURABILITY - Crafted from high-grade aluminum alloy, these M4 thumb lever screws ensure long-lasting performance and reliability, withstanding frequent use in demanding environments. UNIVERSAL COMPATIBILITY - Featuring M4 male threading, these rotating knobs are compatible with a wide range of support rigs and accessories, offering versatile integration options for your setup. PRECISION ADJUSTABILITY - The rotating knob design allows for fine-tuned adjustments, providing optimal control and secure positioning of your equipment for precise shooting angles. LIGHTWEIGHT DESIGN - Each screw weighs only 0.35 oz (10g), minimizing added weight to your rig, ensuring comfortable handling and preventing unnecessary strain during extended use.