The ZG1500 HMS are high-quality jaw clamps. Their purpose is to maintain the load on the bar. The inner rubber part provides load stabilization. This helps the clamps stay on the bar. They are both easy to remove and install. Durability and long service life are guaranteed by the very good materials from which HMS clamps are made. Specification: Material: Aluminum Width: 38 mm Diameter (internal): 50 mm Colors: silver Number of clamps: 2 pcs. Comments: Not intended for commercial use 24-month warranty;The ZG1500 HMS are high-quality jaw clamps. Their purpose is to maintain the load on the bar. The inner rubber part provides load stabilization. This helps the clamps stay on the bar. They are both easy to remove and install. Durability and long service life are guaranteed by the very good materials from which HMS clamps are made. Specification: Material: Aluminum Width: 38 mm Diameter (internal): 50 mm Colors: gold Number of clamps: 2 pcs. Comments: Not intended for commercial use 24-month warranty