Double Bar Rig Crossmember (3.5' or 6')Dual Grip Double Pull Up Bar Cross Beam Support Take your grip training to the next level with the Dual Grip Pull Up Bar Crossmember. Designed for versatility, this crossmember features two pull up bars with different diameters, allowing you to challenge your grip strength and upper body endurance in new ways. A thicker bar increases grip demand, while the standard bar provides a familiar training option, making this an essential addition for athletes