OROOTL Fishing Crimp Sleeves Kit - 600pcs/Box Aluminum Single Barrel Crimps Assortment Oval Crimping Loop Sleeve for Fishing Line Leader Wire Tube Connectors 1mm-2mm

These seem to be identical with another company with "oo" in their name, with a similar small number of reviews, and equally bad product.These do not work for me at all.I am using them for fishing lines: Mono, Fluoro, and stainless leaders.None of those crimp properly.I'm not sure why, but they all just pull thru the crimp. It may be that the double slot is not a double, it is one wide hole, so there is extra space in there?Or, more likely, the alloy is wrong and way way way too soft. It seems to soft just by how hard I have to press compared to other crimps i use successfully.Regardless of why, they don't work for me at all. Into the trash.