... is 4.25kg Finish: cold galvnaized BFD Coupler Panel Formwork Clamp 1. We also call it ... Alignment coupler 2. It used to entighten the connection ... 3. Increase the strength of formwork4. This BFD Coupler Panel Formwork clamp's infill area up to 100mm5 ... the professional manufacture for the SCAFFOLDING, POST SHORE, COUPLER, ALUMINUM BEAM, FORMWORK CLAMP ect in China. Located ...