Ancor 312225 Marine Grade Electrical Nylon Insulated Adhesive Lined Heat Shrink Ring Terminals (12 to 10-Gauge, Size 8 Screw, 25-Pack)

These have been consistent in quality and crimp performance. Pictured is a 10 AWG wire crimped with the Ancor single crimp crimp tool before and after heating the shrink insulation. The performance for 10 AWG wire was great, the performance with 12 AWG was slightly less, but still reliable and secure. You can see that the insulation is thin where it has been crimped, but it does remain intact and completely sealed after applying heat and shrinking the insulation. The after photos show that the thin area created when crimping maintains plenty of thickness and the presence of adhesive all the way around both ends of the heat shrink. After needing to trim some insulation back on one and cutting deeper than intended I can verify that these are tinned copper. The heat shrink is thicker than many I have used and it shrinks slowly making it easy to produce a secure seal and consistent thickness all the way around the connection. As many wires will have different outside diameters, I will point out that my results were produced using Ancor brand wire as well. I did have a few components that needed to be spliced and obtained quality results with those wires as well.

Item is as advertised. It is a nice touch to have adhesive in the shrink tube portion of the ring terminal. This virtually eliminates the need for a second layer of shrink tube.

Very high quality

great product the metal a bit thin but functional.