This arbor with a pilot pin is designed specifically for use with RotaCut hole cutters ranging from 1/4" (6mm) to 3/4" (20mm), ensuring precision and stability during cutting tasks. Featuring a triple-flatted design, it easily fits in 3/8" drill chucks, making it a versatile addition to your welding supplies and cutting equipment collection. As a replacement part, the arbor also accommodates pilot number 11083, aiding in the seamless operation of your hole cutting solutions. Crafted in the USA, this tool stands out for its reliable performance and durability, essential for various cutting applications.