100% brand new and high quality.
Specification:
Material: 45# steel,hardened by heat treatment, and then electroplated
3mm/4mm/5mm/6mm
Inner Diameter: 3mm/4mm/5mm/6mm
Cylindrical Diameter: 10mm
Overall Height: 12mm
Bottom Diameter: 22mm
Fixed Hole Screw: M3
Fixed Hole Distance:16mm


7mm/8mm

Inner Diameter: 7mm/8mm
Cylindrical Diameter: 16mm
Overall Height: 13mm
Bottom Diameter: 32mm
Fixed Hole Screw: M4
Fixed Hole Distance: 26mm


10mm/11mm/12mm

Inner Diameter: 10mm/11mm/12mm
Cylindrical Diameter: 18mm
Overall Height: 13mm
Bottom Diameter: 32mm
Fixed Hole Screw: M4
Fixed Hole Distance: 26mm

Note:
1.Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.
2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package includes:
1 x Coupler