Specification Brand : SUOFEILAIMU-PHONE CASE BulletPoint1 : Material: brass. BulletPoint2 : Color: gold. BulletPoint3 : Size: 2mm, 2.3mm, 3mm, 3.17mm, 4mm, 5mm, 6mm. BulletPoint4 : 2mm/2.3mm/3mm/3.17mm/4mm/5mm/6mm Motor Copper Shaft Coupling Coupler Connector Sleeve Adapter BulletPoint5 : 2mm/2.3mm/3mm/3.17mm/4mm/5mm/6mm Motor Copper Shaft Coupling Coupler Connector Sleeve Adapter US Color : Gold ExteriorFinish : Brass ExternallyAssignedProductIdentifier : 8306045550824 FinishType : Brass,Gold ItemName : SUOFEILAIMU-PHONE CASE Metal Coupler 2PCS 2mm/2.3mm/3mm/3.17mm/4mm/5mm/6mm Brass Rigid for Motor Shaft Coupling Transmission Connector (Inner Diameter : 2pcs 2.3mm 3.17mm) ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : SUOFEILAIMU-US Material : Metal MetalType1 : Copper MetalType2 : Brass NumberOfItems : 1 PartNumber : SUOFEILAIMU-123 ProductDescription : 2mm/2.3mm/3mm/3.17mm/4mm/5mm/6mm Brass Flexible Motor Shaft Coupling Coupler Motor Transmission Connector Great accessories for RC model motor, such as airplane boat model. Widely used in metal, mold, mechanical drive applications. Between the transmission member can do both screw can do model remote control boat propeller shaft and the motor power. Connecting two axis with different diameters, can also be connected with a motor axis, or connecting shafts of different diameters. Widely used in hardware,molds, and the occasion of the mechanical transmission. Note: There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions. Package include: Type 1: 2 * golden brass shaft coupling. 1 *8 pcs srew and 1 pcs wrench Type 2: 1 * golden brass shaft coupling. 1 *4 pcs srew and 1 pcs wrench ProductSiteLaunchDate : 2021-04-06T07:19:29.630Z Size : 2pcs 2.3mm 3.17mm UnspscCode : 60131500