Features:
Inflation gun, chuck, and gauge are all combined in one easy to use unit. 
Clip-on design enables hands-free chuck use.
Built-in relief valve for reducing pressure in over-inflated tires includes flexible hose for easier use.
Gauge has range of 10-220psi.
Specifications:
Material: Rubber and Copper
Color: Black
Product weight: 345g/12.2oz
Package size:  36* 16 * 4cm / 14.2 * 6.3 * 1.6in
Package weight: 418g / 14.7oz
Package list:
1 * Tire Pressure Gauge 
Note:
Measuring tire pressure, tire must be in a cooled state.