Descriptions

• Aluminium Couplings Different sizes have 3 diversified colors, please read the follwing table at the description carelly. Three Size Coupler (1)  Diameter * Length - 12*20mm, coloration is dark purple (2)  Diameter *Length - 14*25mm, shade is red, dark blue and water blue (3)  Diameter *Length - 16*25mm, coloration is water blue   Material: Aluminum Alloy Screw Hole Diameter: 4mm Transfer Pore Diameter: a number of Specification Bore Diameter Tolerance: +0.02mm For example: the Specification "4mm-6mm" means "one gap diameter of the coupler is 4mm ,the different is 6mm"   Specification Diameter * Length Color Specification Diameter * Length Color 2mm-2mm 12*20mm Dark Red 4mm-4mm 14*25mm Dark Blue 2mm-2.3mm 4mm-5mm 2mm-3mm 4mm-6mm 2mm-3.17mm 4mm-7mm 2mm-4mm 4mm-8mm 2mm-5mm 5mm-5mm 2mm-6mm 5mm-6mm 2.3mm-3mm 5mm-6.35mm 2.3mm-4mm 5mm-7mm 2.3mm-5mm 5mm-8mm 3mm-3mm 6mm6mm 14*25mm Water Blue 3mm-3.17mm 6mm-7mm 3mm-4mm 6mm-8mm 3mm-5mm 6mm-10mm 16*25mm 3mm-6mm 14*25mm 6.35mm-6.35mm 14*25mm 3.17mm-3.17mm 12*20mm 6.35mm-8mm 3.17mm-4mm 6.35mm-10mm 16*25mm 3.17mm-5mm 8mm-8mm 14*25mm 3.17mm-6mm 12*20mm or 14*25mm 8mm-10mm 16*25mm  

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