A compact Dual-Action (DA) pump that fits easily fits in your jersey pocket. Dual-Action doubles volume by inflating on both the push and pull strokes. Integrated dust cap keeps pump head clean and thumb lock lever insures air-tight seal.Presta compatible head with integrated dust capAluminium barrelThumb lockInflates up to 120psiDual action pumping headAvailable with 120psi gaugeSide mount bracket included18.3x3.2x2.8cm95g without gauge