Metal joint suited to use direct axis motor, suitable for model cars, model ships, robots, and other metal adapters to use.
"4mm-6mm" means "one hole diameter of the coupler is 4mm, the other is 6mm"

2mm-2mm, 2mm-2.3mm, 2.3mm-2.3mm
Universal Joint Outside Diameter: 8mm
Universal Joint Length: 18mm
Side Screw Fixing Hole: M3

2mm-3mm, 2mm-4mm, 2.3mm-3mm, 2.3mm-4mm, 3mm-3mm, 3mm-3.17mm, 3mm-4mm, 3.17mm-3.17mm, 3.17mm-4mm, 4mm-4mm
Universal Joint Outside Diameter: 9mm
Universal Joint Length: 23mm
Side Screw Fixing Hole: M3

3mm-5mm, 3.17mm-5mm, 4mm-5mm, 4mm-6mm, 5mm-5mm, 5mm-6mm, 6mm-6mm
Universal Joint Outside Diameter: 11mm
Universal Joint Length: 23mm
Side Screw Fixing Hole: M4

5mm-8mm, 6mm-8mm, 6.35mm-8mm, 8mm-8mm
Universal Joint Outside Diameter: 14mm
Universal Joint Length: 35mm
Side Screw Fixing Hole: M4
Fixed Clamp Spring Design

8mm-10mm, 10mm-10mm
Universal Joint Outside Diameter: 16mm
Universal Joint Length: 35mm
Side Screw Fixing Hole: M4

Package Included:
Coupler x 1
M4 Screw x 2
Part Number: XHK-0725