4 Pcs Hole Gage Cylinder Bore Gauge Bore Guide Kit Small Hole Gauge Ball Bore Gages Telescopic

These gages are used with external micrometers to measure the inside diameter of bores and are very long for deep and shallow holes slots and similar workpieces The measuring surface of each piece is fully hardened to ensure long tool life Function Color As Picture Shown Material Metal Size 105 x 1 x 1cmPackage includes 4pcs Global Small Bore Precision Gauge Set Telescoping Full Round Ball Hardened Bore Gauge 3 to 14mm