Handan Ruitao Fastener Manufacturing Co., Ltd is based in China and lists British double couplers, British swivel couplers and British board retaining couplers on Global Trade Plaza. The double coupler weighs 0.98–1.0 kg and is offered with electro‑galvanizing or hot‑dip galvanizing. The swivel coupler weighs 1.12–1.15 kg and has a zinc‑plated finish. The board retaining coupler weighs 0.6–0.63 kg. All three items are produced to EN74/BS1139. Buyers can send an enquiry through Global Trade Plaza.