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Application introduction:
Small universal couplings are used to transmit motions
that are not on the same axis. There are single type
(WSD), double type (WS), retractable type (WSS), and
straightening machine (WHL, WSL); materials are available 45# steel, 40Cr, stainless steel, etc.; the surface can be treated with blackening, nickel plating, galvanizing, etc.
Analysis of purchase options:
Thefirst numberrepresents the size of the inner hole
The second numberrepresents the size of the outer diameter
The third numberrepresents the total length

Notice:

Due to different monitors, there may be some color difference, which is normal.
Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.