【EASY TO USE AND CONVENIENT】Made of high quality stainless steel, each measuring feeler gauge has 32 blades thickness; Foldable, easy and convenient to take and store. Easily measure gap widths with the ABN Valve Offset Feeler Gauge. It is great for use on guitars, engines, and so much more. Includes metric and inch sizes etched on each blade. 【BUILT TO LAST】Constructed from hardened tempered steel with a lube oil coating to prevent pitting and corrosion; Each blade has sizes laser etched for easy identification; Blades are bound within a blade protector to prevent loss of individual blades; 【EASY IDENTIFICATION】 dual marked metric and imperial, 0.0008 inch/ 0.02 mm to 0.040 inch/ 1 mm, the numbers of size are etched into feeler gauge for easy identification 【METRIC SIZES (mm)】0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.13, 0.15, 0.18, 0.20, 0.23, 0.25, 0.25, 0.28, 0.30, 0.33, 0.38, 0.40, 0.45, 0.50, 0.55, 0.60, 0.63, 0.65, 0.70, 0.75, 0.80, 0.85, 0.90, 1.00 mm 【INCH SIZES(inch)】0.0008, 0.0012, 0.0015, 0.002, 0.0025, 0.0028, 0.003, 0.0036, 0.004, 0.005, 0.006, 0.007, 0.008, 0.009, 0.010, 0.010, 0.011, 0.012, 0.013, 0.015, 0.016, 0.018, 0.020, 0.022, 0.024, 0.025, 0.026, 0.028, 0.030, 0.032, 0.034, 0.036, 0.040 Inches