| Type | Series/CAD | Applicable cylinder bore size (mm) |
| Light weight | JC  |
20,25,32,40,50,63 |
| Standard | JA  |
6,10,15,20,25,30,40,50, 63,80,100,125,140,160 |
| Heavy load | JAH |
40,50,63,80,100 |
| For compact cylinders | JB |
12,16,20,25,32,40,50, 63,80,100,125,140,160 |
| Stainless steel | JS |
10,15,16,20,25,32,40, 50,63 |
| Features |
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