The Point and Lock tripod by HD is constructed with injection-molded glass-filled nylon for durability. Its adjustable tension legs effortlessly span holes up to 16", with a clip-in center for smooth rotation and secure attachment. This tripod's ability to lock in position is essential for ice fishing success. Once you've located your target, tighten the knob against the internal stainless ball bearing, and you're ready to drill right on the fish!