Quickly adjust both Length and Depth with these uniquely easy to use Interlocking Folding Tools. Unique snap-lock feature connects tools together to create virtually any custom folding length in 6 (15 cm) increments. Adjust folding depths from 3/8 to 1-1/2 or 10 to 40 mm on the metric scale, or anything in between. Low profile design permits folds to near 180 degrees. Make precise folds in galvanized sheet steel to 24-gauge (0.71 mm) and common aluminum coil stock thicknesses.