Blackburn Honest Digital Shock Pump SilverThe Blackburn Honest Digital Shock Pump gives you legendary accuracy to 1% to give you the ideal shock reading and pressure. This pump can handle up to 350PSI. The zero air loss head swivels around for freedom of motion. The thread-on Schrader valve and air bleed button allow maximum efficiency. This model is auto on-off and uses a replaceable CR2032 Battery.768686155260