Perfect Transmission supplies Cast Iron made Flexible Jaw Couplings. Perfect Transmission offers various types of gear couplings, chain couplings; flexible ci break couplings, brake drum with flexible geared couplings, rigid couplings, and break drum geared couplings and nylon gear coupling etc. Cast Iron made Flexible Jaw Couplings is equipped with integrally molded rubber spider [star] for extra strength and durability. This Flexible Jaw Couplings is easy to install.