This unique tight squeeze is a full function hand tool for Hi-lok® fastener installation. This amazing tool does just what the name implies. It gets into tight places and allows one handed installation. No more struggling in blind areas, around corners, inside cavities, trying to hold a hex key with one hand and work the ratchet with the other. Interchangeable hex keys and sockets fit an entire range of pin and collar combinations. This model incorporates the Roller Ratchet® gearless ratchet, so it works with extremely limited handle movement. Works on aluminum, steel and titanium collars.