Identify Screws Instantly with the Screw Chek'r
This ingenious, threaded gauge quickly tells you size, mm pitch, tap drill size, clearance drill size, length and basic diameter. Even straightens bent screws and cleans up rusty or battered threads. Made of heavy gauge, satin chrome plated steel. Instructions included.
Metric Screw Chek'r for metric screws from 2mm through 7mm.