Cobalt 2-Flute Combined Tap and Drill, Size: 7/16-20 , Drill Size: .3955, Thread Length: 1-1/4", O.A.L.: 3-3/4". 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