Transfer Screw Set, 5/16"-18 Thread 

Transfer the exact location of a threaded hole to your work piece. Transfer screws are more accurate than transfer punches and may be used with blind holes. The use of transfer screws is the most precise method of transferring threaded holes to mating parts and are great for tool & die work, and in layouts.

This set includes 6 5/16"-18 thread transfer screws and the wrench/holder.