The innovative GEARWRENCH reversible wrench racks allow for up to 30% space-saving in tool Drawers vs. Standard racks. The 83131 comes with 2 rack units and measure 1. 5" Tall. The GEARWRENCH 83121 Reversible Wrench Rack Set contains 2 space-saving organizers that each hold up to 16 SAE or metric wrenches, of sizes up to 1 inch or 25mm. Designed for the professional automotive or industrial technician, these racks include key usability features like the self-aligning, quick change, & reversible side rails along with the reinforced plastic composite material slots that guides wrenches so they always face forward for quicker & easier identification. Our angled design takes up 30% less space in your tool drawer, and the two included racks have different colored side rails for easy differentiation.