Clamshell bucket is designed to be attached onto an excavator or crane. The hydraulic version is generally attached with an excavator & the mechanical version are designed to be used with Cranes. Twin cylinders mounted on the outer rim of the bucket provide the required digging force. The bucket is made from Hardox plates to make them wear resistant. The inner side of the bucket has a smooth surface for easy unloading of high viscosity material such as mud and clay.