Key features 32-Blade Dual-Scale Feeler Gauge Set Precision-engineered with 32 stainless steel blades featuring laser-engraved metric (mm) and imperial (inch) readings. Easy-to-read markings ensure accurate gap measurements for spark plugs, valves, and machinery. Complete Metric & Imperial Sizing Covers 0.03-1.00mm (e.g., 0.05/0.10/0.30mm) and 0.001-0.040 inches (e.g., 0.002/0.010/0.025”). Comprehensive range suits automotive, engineering, and DIY tasks. Industrial-Grade Durability Heat-treated stainless steel blades offer high hardness, wear resistance, and long-lasting elasticity. Polished smooth edges prevent hand injuries during use. User-Focused Design Nut-fastened pivot allows quick folding/stacking. Compact for portability and storage. Ideal for mechanics' toolboxes and on-site jobs. Versatile Measuring Tool Essential for measuring gap widths/thicknesses: spark plug gaps, valve clearances, guitar string heights, piston rings, and precision hardware installations. Free shipping included. 30-day hassle-free returns.