Our Drill rack organizer are made by quality DIA 1.97" - 2.36" carbon steel, net weight up to 8Lbs. The load capacity of each shelf is up to 80-150Lbs, depending on the load-bearing wall. Each drill holder has a load capacity of 30Lbs and 1.57" spacing for easy hanging. Sprayed layer after electric surge, our tool storage offer more wear-resistant.