Features: There are 4 types, 1-6.5mm /3-15mm/15-30mm /30-45mm, selecting based on your needs. Made of high carbon stainless steel, miniature and light weight, pocket size. durable. Accurate taper throughout the length of the gauge makes it convenient for measuring diameters of small holes, slots etc. Metric scale , this is an for ideal tool for die makers, machinists and on inspection floors. Rolling pattern is adopted, it is not easy to fall off, feel comfortable and increase friction. Specifications: Material: Stainless Steel Size: 1-6.5mm /3-15mm/15-30mm /30-45mm Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Taper Gauge