PACKAGE INCLUDE : Range : 5/16" 6" (8mm to 150mm) , 6PCS in total(1 gage : 5/16 1/2" range x 4 . 20" overall; 1 gage : 1/2 3/4" range x 4 . 40" overall; 1 gage : 3/4 1 1/4" range x 4 . 40" overall; 1 gage : 1 1/4 2 1/8" range x 5 . 85" overall; 1 gage : 2 1/8 3 1/2" range x 5 . 85" overall; 1 gage : 3 1/2 6" range x 5 . 85" overall); Ethylene plastic bag packaging
AUTOMATICALLY SELF CENTERING : Double action handles are rigidly attached to theplungers and are automatically self centering , Assist in quick checking of holes , slots and recess up to 6 inch deep
PRECISION GROUND : The ends of bothare head treated steel and precision ground to a radius allowing proper clearance on the smallest hole the will enter , used to obtain the exact size of holes and slots , which is suitable for factories , schools , offices and other places
HARDENED STEEL MATERIAL : points are hardened tool steel with heat treatment and chrome plating on the . Super quality , high rigidness , good wear, in use
WIDE APPLICATION : Constant spring tension delivers uniformpressure . Used for measuring holes , slots , grooves , and recesses in woodworking , metalworking , machining , and pattern making applications