STRONG GRIP - Securely fastens to surfaces from 0.12 to 1.65' (3 to 42mm), providing a stable base for your equipment, ensuring steady shots and reliable support in any environment. EASY ADJUSTMENT - Features a user-friendly 1/4'-20 thumbscrew knob for quick and precise positioning, allowing you to make on-the-fly adjustments without needing extra tools. LIGHTWEIGHT DESIGN - Constructed from durable materials while weighing only 5.5 oz (155g), making it easy to carry and ideal for photographers on the move, without adding bulk. DURABLE BUILD - Crafted with high-quality materials, this C-clamp is built to withstand rigorous use, ensuring long-lasting performance and reliability for all your mounting needs.