Specifications 

• Shaft Usage: 5mm to 8mm / 0.19 to 0. 31 inch
• Material: Aluminum alloy; Size: 30x25mm/ 1.18×0.98inch( L*D)
• Feature: Set screws (Coiling Clamping); Main Color: Silver tone
• Flexibility of coupling shaft removes stress between the motor and driving components.
• The shaft couplers are widely applied to small CNC machines encoding and 3D printers Z shaft coupling, simplifies the debugging difficulty.