1. Tire pressure gauge pencil is lightweight, easy to carry, easy to use, easy to store Pocket clip design makes it easy to carry while working 2. 30 front air chuck is designed for inner wheel or hard-to-reach valve 30 reverse chuck is for outer wheel. Long stainless steel stem allows you to reach inner wheel without dirtying your hands 3. Pneumatic gauge chuck on the valve for easy and fast check tire pressure and the scale plate will slide off. Read tire pressure Tire pressure gauge is a practical and useful tool for trucks, buses, cars, SUVs, RVs, ATVs, motorcycles (with Schrader valve) or motorcycles. 5. Tire pressure gauge is made of high strength stainless steel for long lasting durability. Sturdy, rust resistant and durable Specifications: Product Name: Car Tire Pressure Pen Detector Product Color: Silver Product Size: Approx. 5.51 x 0.79 x 0.31in Product Material: Stainless Steel Pressure Display Range: 300psi Product Weight: Approximately 0.6 oz (18 g) Applicable Model: Universal Application: Car Mini Tire Pressure Pen Product Features: No Battery, Ready to Use, Compact and Portable Product List: 1*Car Tire Pressure Test Pen Note: 1. Due to different monitor and light effect, the actual color of the item may be slightly different from the color shown in the picture 2. Please allow slight measurement deviation due to manual measurement.