Features 1、These precision tools are suitable for checking location, hole size and depth, gage slots, distance between holes, etc. 2、Come with a wooden case to keep these pin gage neatly organized and easy to find. 3、Each pin gage is labeled with corresponding size for easy identification. 4、Made of high quality bearing steel, through high temperature quenching and temper, hardness up to 58-63HRC. 5、Widely used in high-tech fields such as electronic boards, circuit boards, molds, precision machinery manufacturing. Specification Features: These precision tools are suitable for checking location, hole size and depth, gage slots, distance between holes, etc. Come with a wooden case to keep these pin gage neatly organized and easy to find. Each pin gage is labeled with corresponding size for easy identification. Made of high quality bearing steel, through high temperature quenching and temper, hardness up to 58-63HRC. Widely used in high-tech fields such as electronic boards, circuit boards, molds, precision machinery manufacturing. Specification: Item Type: Pin Gage Material: GCR15 bearing steel Length: 50mm Accuracy: +/- 0.001mm Hardness: 58-63HRC Range: 1-1.49mm, interval 0.01mm, 50pcs in total Package List: 50 x Pin Gage 1 x Wooden Bo Package List