Mini pen/pencil shaped aluminum tire gauge, aluminum material, the color can be any color from Pantone, logo imprint available for promotion gift in pen shape, easy to take. Pen-button with magnet, calibrated: 10-50lbs, 5-50lbs, 10-100lbs, 10-120lbs, etc. Scales selection: bar, kpa, kg/cm2, psi. Mini pen tire gauge with magnet, metal / chrome-plated plastic head, 4 side plastic bar, pen-button with magnet, aluminum tube, different choice of color. It's magnetic & will stick to any metal surface. Check you tires air pressure and improve your gas mileage. A handy must have item. Also great for bike rides, any trip where a tire gauge could come in oh so handy. Pressure range: 10-50 psi and 70-350 kpa.