The of feeler gauge is specially treated, smooth and doesn’t hurt your hand. The surface of the steel is polished. It’s full of bright metal texture. Foldable, feeler gauges fold into a plated with a thumbscrew, easy to carry, convenient to take and safe to store. Features - Color: Silver. - Material: Stainless steel. - Size: 10.50 x 1.50 x 0.60cm/ 4.13 x 0.59 x 0.24 inch. - Suitable for designers, engineers, mechanics to measure the thickness of tappet clearances, piston ring gaps, spark plugs gaps, bearing clearances and other . - The feeler gauge is made of stainless steel with a lubricating oil coating, which can prevent pitting and corrosion, and It is . - Foldable feeler gauges, easy and convenient to take and store. - Steel is more resistant to wear than stainless steel, with higher strength, high precision and hardness, good elasticity and wear resistance. - The filler gauge is installed in the plated to prevent the loss of a single, and is designed with a thumb slot for easy selection and expansion. Package list: 1 x gap ruler