Please Noted:

Package include: Coupling*1+ screw*4+wrench*1(Only one wrench is delivered per order.)

Size description:

("D" means outer diameter, "L" means length.)

1.The following 12 types, the outer diameter is 14mm, length is 22mm, use M4 machine screws for the side holes:

3.17-3.17mm, 4-4mm, 4-5mm, 4-6mm, 5-5mm, 5-6mm, 5-8mm, 6-6mm, 6-8mm, 7-7mm, 7-8mm, 8-8mm

2.The following 4 types, the outer diameter is 16mm, length is 22mm, use M4 machine screws for the side holes:

5-10mm, 6-10mm, 8-10mm, 10-10mm

3.The following 3 types, the outer diameter is 20mm, length is 22mm, use M5 machine screws for the side holes:

8-12mm, 10-12mm, 12-12mm