The Omega Technologies TSQ25 Tight Squeeze Assembly, No Hex Key or Socket is best suited for interference fit fasteners. The Omega Technologies TSQ25 Tight Squeeze Assembly, No Hex Key or Socket is a full function hand tool for Hi-Lok® fastener installation and works exactly as its name implies by getting into tight places and allows one-handed Hi-Lok® installation. Omega Technologies Tight Squeeze can be compared to the bulky pneumatic installation tools but can go anywhere they can’t. Omega Technologies Tight Squeeze feature interchangeable hex keys and sockets that fit a wide range of collar and pin combinations and works with aluminum, steel and titanium collars.