Fleyer (Leaf) Chains are standardized according to ISO 4347 norms. They are designed for use in cranes, load lifting devices, and equipment, and are employed to support counterweights and transmit movements under load. Fleyer chains, structured as leaf chains, operate without gears due to their unique design. The combinations of links (Inner Link x Outer Link) are variable and tailored to the load requirements. Chains using DIN 8187 and DIN 8188 components are available in LH (BL) and LL series, while the AL series is based on DIN 8188 ISO 606 American standard components.