Features: 

• This stainless steel flex coulper collet with two grub screws fits for 5mm motor shaft and 4.76mm (3/16") flex cable for RC model boat. 
• It's for round end cable.

Specifications: 

• Length: 30mm (1.2")
• Weight: 15g
• Material: stainless steel
• Rotation: left

Shipping package:

• Coupler: 1pcs