- Bellows manufactured using Seamless Tube - Bellows manufactured using 0.15 ~ Seam Tube * Features:Bellows ? sus304 Hub ? sus304 * Spec: OD 15 ~ 82(Torque 1~220Nm) - See more at: http://www.bestmadeinkorea.com/product-10806/Machinery-Industrial-Parts-Tools/Bellows-Coupling.html#sthash.2rIzqSFu.dpuf