Commercial fleet and MRO (Maintenance, Repair, Operations) supplies for Idaho businesses. Our inventory includes automotive parts, fluids, filters, tools, and equipment for vehicle and facility maintenance. Professional maintenance solutions for fleet operations, manufacturing facilities, and industrial plants. Free delivery in Treasure Valley. Effortless Essentials™ inventory management available. Expert MRO support from our Boise team since 1950. Reduce downtime with Kowallis Pro maintenance supplies.