... Type: Japanese type,korean type and British type 1. scaffold single coupler2. THICKNESS: 3MM3. SURFACE: GALVANIZED4. Type: Japanese type, ... specialize in the design, manufacture and marketing all kinds of pressed scaffolding clamps, couplers, non-standard fastener and OEM ... can visit our website: www.dahuajx.comWe have several kinds of single coupler, please refer to the attached picture: ( function(){ ...