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Durable Material: The coupling connector is made of 45# steel( it is better than copper and aluminum alloys ), heat and electroplated process make it sturdiness and insulation, striking shaft more stable and easy for installment and replacement.
Widely use: used in model shaft connection, perfect accessories for RC Model motor.
Size:Inner Diameter: 2mm,Height:12mm,Fixed Hole Screw: M3.
Package included:4Pcs 2mm Flange Shaft Coupling + 1Pcs M3 Mini Hex Wrench + 8 x M3 Fastening Screw
Parts for RC Airplane Boat ,DIY Model. Perfect accessories for RC Model motor, etc.