The handle barrel and shaft are made of cnc machined aluminum while the end caps are made from composite matrixthe hv design allows this pump to inflate tires to riding pressure with 30 fewer strokes compared to conventional hand pumpsthe overlapping handle and barrel with oversized piston and shaft are integrated into a compact designcomes equipped with the abs flex hose and a composite matrix frame pump mountsmall 170mm 111gmedium 216mm 127gmax 90psi 62bar