2 in 1 key ring tire tread depth/pressure gauge/tyre pressure gauge Features: ABS plastic body Pressure gauge for measuring tire air pressure(up to 50psi or 350kpa) Tread depth gauge for measuring tire tread wear (up to 25mm/32nds) Convenient key holder design makes carrying and measuring easy. products size:8.0*1.5cm material:ABS plastic Each in ploy bag,500pcs in master case,meas:37.5*31*28.5cm,10.5/10.0kgs tyre tread depth gauge,2 in 1 tread depth gauge,depth gauge,tire gauge,pressure gauge,tire gauge