Cobalt 2-Flute Combined Tap and Drill, Size: 1/2-20 , Drill Size: .4580, Thread Length: 1-3/8", O.A.L.: 4-1/16". Designed to drill and tap thru holes in a single pass up to two times the tap diameter. Also can be used on multiple spindle heads with reversing mechanisms. Made in USA.
*Photos are for general reference of product. The photos are not specific to each size