Pen & Dial type Mini tire pressure with key chain Pen type:PLASTIC BODY & Head. (option: HIGH CHROME PLATED FINISHPOPULAR TYPE: )(option2: Metal Head ... . 2 SIDES PLASTIC BAR. (option: 4 SIDE PLASTIC BAR)CALIBRATED:10-50 PSI,SCALE SELECTION (bar,kPa,kg/cm2)PACKING:50PCS ... :PLASTIC BODY. DURABLE PVC TIRE TREAD CONSTRUCTION. ACRYLIC LENS. CALIBRATED:10-50 PSI,SCALE SELECTION (bar,kPa,kg/cm2)PACKING:25PCS ...