【Secure Mounting Solution】 Quickly and securely mount light fixtures or accessories via a 5/8" stud, and provide a strong and solid grip on light stands, square pipes, C stand columns, or other tubular supports up to 6.6"/16.8cm in diameter with the hand tighten knob 【Sturdy & Durable】 The robust stainless steel shaft and aluminum alloy jaw is built to withstand heavy duty use and can securely support heavier lights or other accessories 【Easy & Fast Setup】 Simply slide the adjustable jaws to accommodate different tube sizes, and smoothly lock them in place with the ergonomically designed hand tighten knob, for quick and hassle free mounting 【Anti Twist Design】 The main shaft incorporates a specially cut channel that prevents the jaws from rotating during usage, and the cleverly designed grooves into the back of the clamp keep the jaws aligned as they open and close 【Non Slip Rubber Pads】 The cross patterned rubber pads within the end jaws add friction to secure vertical or horizontal installment, prevent slipping, and protect your mounting surface from scratches when in use