These Hoses are fitted in Power Steering System of Trucks, Buses, Cars, Tractors & Other Vehicles & are used to transmit power steering oil between different parts of the Power Steering system. Synthetic, Oil resistant rubber tube with High Tensile wire braids or textile braid called R1 or R3 Hoses along with the Hydraulic fittings constitutes the Total Power steering Hose assembly. All relevant SAE & Other international standards are followed in the manufacture of these hoses.