Fishing tackle. The solid ring is jointless, and it's not welded.
 

Size(inner diameter/ outer diameter/ thickness)    Test(kg)

6.5x9.5x1.5mm                                                    300kg
7.5x11.5x1.5mm                                                  350kg
8.5x12x1.8mm                                                      390kg

We also have other sizes, please see the following:
8x12.2x1.8mm
7x10.6x1.5mm
6x9x1.5mm
5x7.6x1.2mm
4x6.4x1.0mm

 
Stainless steel.
 
USD0.06 - USD0.1
 
10,000pcs
 
30~40 days
 
Opp bag pack per 1000pcs, small package can also be supported with extra cost.
 
Opp bag