The Triplett LongLockers (TT-200) are perfect for the professional or DIYer. Grab, hold, clamp, twist, reach, remove, insert, pick up, and much more. Comfortable to use with easy thumbscrew adjustment of size and pressure, easy release lever, and cushioned non-slip handles. Designed to last with durable heat treated high carbon steel construction, rust resistant finish, and drop forged jaws. Founded in 1904, U.S.-based Triplett Test Equipment continues to be on the leading edge of specialized testers. Whether supplying vital test equipment to the U.S. Signal Corps during WWII, or providing the railroad industry with essential testers to ensure the safety of their crews and the public, Triplett prides itself on developing innovative, reliable, and durable test equipment that also wont break the bank. Tripletts catalog contains a wide array of test equipment parts and accessories such as multimeters, voltmeters, cable testers, security cameras and security camera accessories, wire cable mapping kits, video monitors, and other specialty testers. They serve industries such as HVAC, security, electronics and electrical, telecom, and more.