Feature: Anti-rust treatment on metal surfaceThe surface of each feeler is coated with rust-proof oil. 360-rotation ruler can be 360-rotated easy to expand and contract and easy to carry and store. Stainless steel has high hardness low density value high density value large tensile and anti-wear coefficient and greatly improved strength of the scale. The specifications are printed on each ruler which is clear and clear and easy to use. Specification Name: Stainless Steel Feeler Gauge Set Number of pieces: 16 pieces Material: Stainless steel Metric (mm): 0.127 / 0.152 / 0.178 / 0.203 / 0.229 / 0.254 / 0.279 / 0.3050.330 / 0.356 / 0.381 / 0.406 / 0.432 / 0.457 / 0.483 / 0.508 Printing (inch): 0.005 / 006/007/008/009/010/011/012/013/014/015 016/017/018/019/020 Uses: Gaps measurement in automotive power manufacturing home improvement railway and other industries includes: 1 set x Stainless Steel Feeler Gauge