4PCS Hole Gauge Set Full Ball Telescopic Gauge 3?13mm for Measuring Small Holes Slits Grooves

How to Use: Used for measuring small holes, slits and grooves, used with micrometers or calipers, with knurled locking device Specification: Item Type: Hole Gauge Material: Steel Measuring Range: Approx. 3-13mm / 0.12-0.51in Product Specifications: 1 x 2/5in to 1/2in (10-13mm), 1 x 3/10in to 2/5in (7.5-10mm), 1 x 1/5in to 3/10in (5-7.5mm) , 1 x 1/8in to 1/5in (3-5mm) Package List: 4 x Hole Gauge 1 x Packing Bag