Bessey 2400J-12 12-Inch Step Over J Clamp "J" style return rail design allows clamp to step over the lip on channel iron, angle iron, I-beam and other obstructions Throat depth 5-1/2", opening 12", return rail 4", 2660 lbs of clamping pressure Manufactured to Bessey's high quality standards and includes a Bessey patented Morpad that tilts to 35 degrees and is replaceable Tempered steel sliding arm, drop forged and electrogalvanized for added strength and an infinite life Rail, fixed jaws and pressure plate heat-formed in one piece from cold drawn profiled steel optimized for high static stress loadings