The T3655 Water pump pliers from CK tools are speedlok. It is made with a special alloy which has been drop forged, hardened and tempered to give the product exceptional strength and durability. This model features extra fast and secure speedlok adjustment speeds, for fast and simple adjustment of a range of bolt sizes Drop Forged products are items that are molded onto thier shapes for the utmost accuracy and strength when using this product Has a slide to adjust mechanism for fast and accurate size adjustment and contoured anti-slip handles for comfortable and powerful operation. Also has slim head and jaws for access to confined spaces meaning plumbers, DIYers, technicians, enginers and other profesions can twist nuts into place. Main Features Special alloy steel, drop forged, Hardened and tampered for exceptional strength and durability. Induction hardened jaws for outstanding long term performance Slide to adjust mechanism for fast & accurate size adjustment Slim he