1. JIS fixed scaffold coupler 2. fixed/ double coupler 3. 48.6*48.6mm 4. 650g, 620g, 580g 5. ... has more than 15 years experience on scaffolding coupler production. We have several kinds of scaffolding couplers, includes Japanese type, Korean type, British ... coupler: 42.7, 48.6, 60.5, 76.2mm.2. Thickness: 2.5, 2.75, 3.0mm3. Weight : 580g~750g4. Type: pressed ...