Ernsts' 5076 RD - RED and 517 BK - BLACK STUBBY Wrench Grippers Organizer Combo Set. The set help you maximize draw space for your wrenches with both Forward Grippers. This combo set also keeps your SAE and METRIC color the same Grippers. A suggestion, use RED Rails for SAE and use Black Rails for Metric. The grippers securely transport wrenches to the job site. These superior organizers provide the ultimate in tool box storage. They accommodate a wide variety of wrenches and allow for immediate recognition of a missing wrench. The wrench organizers are made from soft, flexible material. While holding wrenches secure for transportation, they also allow for easy one-handed engagementand removal of wrenches. Fuel and solvent resistant, made from Eco-friendly recycled products in the USA. Ernst's 5076 RD - RED Forward STUBBY GRIPPER Holds 11 Wrench [6.5" x 2" x 1.5" (L x W x H)] 5077 BK - BLACK Forward STUBBY GRIPPER Holds 11 Wrench [6.5" x 2" x 1.5" (L x W x H)].