The Magnetic Air Hammer Bit Holder from Tool Truck Essentials is designed to fit 36 bits and measures 14.25" by 6.25". The holder is made from CNC-machined high-density polyethylene (HDPE) and features recessed rare earth magnets to hold the bits securely on the wall or ceiling of the truck with four screws using mounting holes and hardware provided. Tool Truck Essentials offers a nonmagnetic version as well.