BESSEY Welding Table Clamps designed for 28 mm matrix tables are available in a wide range of choices for different needs including variable throat depth versions and accessories to complement the clamps. The TW28 series from BESSEY offers clamping elements with 2 fixed throat depths of 4.75 in. (120 mm) in. and 5.5 in., and a clamping capacity of approximately 12 in. (300 mm). For increased flexibility the TRV28 series adds 3 more clamps into the mix that have variable throat depth. The throat depth is infinitely variable within the min-max range of the sliding arm. Both series are characterized by a tempered profiled rail and forged sliding arm for strength where you need it, as well as the option to choose between three handle variants. The versions with the high quality 2-component plastic handle and the T-bar have a smooth-running trapezoidal threaded spindle and replaceable pressure pads that require no tools to install. The lever handle variant has a positive locking ratchet mechanism for controlled, fast and vibration-proof clamping. There is also version with a gripping arm (TW28GRS) and a heavy duty version with T-handled spindle and heavy-duty MorPad. Many accessories are available, such as V-blocks, variable risers and assorted adapters that enable the use of toggle clamps and other machine-table clamps on matrix tables with 28 mm holes.