Compatible with both Presta and Schrader under the same simple stepsInsert, PUSH the collar down and TWIST it by one turn to secure engagement; simply pull back the collar to disengage.Key Features:Ergonomically designed 5° tilted barrel.,Pressure bleed button ( CAD ) for ultimate accuracy.,.Specification:Head: Push & Twist (Presta / Schrader).,Handle: CNC machined aluminium.,Barrel: CNC machined aluminium.,Base: CNC machined aluminium.,Capacity: 220 psi / 15 bar..