... fastening function 4,ISO 5,Aluminum alloy Strain Clamp(bolt type) NLL / cable clamp /pole line hardware is used to fix ... pole towers,playing the function of anchoring. Classifications1>Bolted type2>Compression typeApplicable Apply in galvanized steel strand,aluminu-clad steel strand ... clamp ,transformers,safety helmet and so on. Strain Clamp(bolt type) NLL / cable clamp /pole line hardware