JOST, a leading producer of fifth wheel couplings, kingpins and telescopic landing gear, has supplied its 20T and 28T fifth-wheel couplings to BharatBenz’s 4 x 2, 6 x 2 and 6 x 4 tractors. The products, JSK36DV1 and JSK38DV50, have passed the standard life tests required to ensure very high reliability. Close to a million JSK36DV1 couplings have been sold so far by JOST across the world.