High-strength, corrosion-resistant galvanised steel construction for hard-wearing durability. Maximum storage capacity for heavy clamps within a condensed space. Up to 15 quick-release bar clamps can be stored in a 615mm (24-3/8") long space. Eliminates the need to close clamps when hooked over the trough, providing a sturdy, stable storage system. Compatible with most quick-release bar clamps. Pre-drilled 406mm (16") on centre for mounting to wall studs with spacers between clamp slots measuring 34mm (1.33") wide and clamp storage slots measure 7.6mm (0.3") wide.