I would give 5 stars but you really need to turn on the heater to get the tip hot enough to work with. I don't know what alloy they were made of, but I suspect they skimped on molybdenum so it wouldn't provide efficient heat transfer. I have other 316L stainless steel tips that are similar in size but different shapes and all work well at normal temperatures.
For locksmith, repair and precision work Stels Tool set, 1/2", 1/4", CrV, 82-pcs plastic case, Stels, 82-pcs, silver
39 Review
Cordless DEWALT DCD701F2 Xtreme Brushless Drill
95 Review
Makita DK0122 corded power tool set
77 Review
Cordless drill driver Metabo PowerMaxx BS Basic 600080500
68 Review