Irwin Carbide 1/2" Core Box Router Bit - Made in USA

Made in USA  Model No. 520202 - Unused old stock 1/2" Core Box x 3/8" depth 2-1/8" Overall Length 1/4" shank Product Description Specs  Irwin Carbide 1/2" Core Box Router Bit - Made in USA. Carbide Tipped Router Bit. 2-1/8" overall length. 1/4" shank. Irwin Model No. 31134.  Made in USA. Product Model # Irwin Carbide 1/2" Core Box Router Bit - Made in USA 31134