Feature

●It is not stainless steel, it is a kind of steel, but it is harder than ordinary iron
●Coupling length is 22mm
●There are 2 outer diameters of different openings. 0.6 inch (14 mm), 0.6 inch (16
●The hard coupling is a 90 degree tightening design and secured by four machine screws
●Solid copper material, opening error is 0.03mm (basically ignored), through hole design, two opening length accounts for half the coupling!

[6mm 8mm]

Description

Widely used in motor, hardware, mold, and mechanical transmission occasions.
Size Instructions:
The following six couplings are 14mm in diameter and 22mm in length.
4-4, 4mm opening on one side, 4mm on the other end (Side Hole M4 Machine Screws)
5-5, 5mm open on one side, 5mm on other end (Side Hole M4 Machine Screws)
5-8, 5mm opening on one side, 8mm opening on other end. (Side Hole M4 Machine Screws)
6-6, 6mm open on one side, 6mm on other end (Side Hole M4 Machine Screws)
6-8, 6mm on one side, 8mm on other end (Side Hole M4 Machine Screws)
8-8, 8mm on one side, 8mm on other end (Side Hole M4 Machine Screws)
The following three couplings are 16mm in diameter and 22mm in length.
6-10, 6mm open on one side, 10mm on other end (Side Hole M4 Machine Screws)
8-10, 8mm opening on one side, 10mm opening on other end. (Side Hole M4 Machine Screws)
10-10, one side opening 10mm, other end opening 10mm (Side Hole M4 Machine Screws)