we are a professional manufacturer for various scaffolding couplers. Pressed type / Forged type are all available pressed Double Coupler1,material :SPHC 2,Standard:EN74,BS1139 3,for tube o.d. 48.3mm x 48.3mm 4,thickness: 5mm 5,weight: 0.81kg 6,surface treatment: self-color, zinc plated, galvanised7.Color:Self-color(Black) , White, Yellow 8,good bearing capacity,durable & stable Double Coupler