A. Titan Instruments # UNC 15/23 UL
Benco Product # 5301-086
Country of Origin: United States
Double ended instrument with a UNC probe on one side with markings at 1-2-3-4-5-6-7-8-9-10-11-12-13-14-15mm and a #23 explorer on the other. The color coded black markings will not chip, flake, or fade. Made in the United States from 100% stainless steel.