Piranha 90% Tungsten Steel Tip Darts 28 Grams 19802

I bought these right before the start of my sprint 2018 league. They are balanced and shoot well enough, but the grip disappeared within months. When I first got them the grip was like sandpaper. Now they slide a little in my hand after less than a year. I knocked two stars off for that. With the reduced grip they are decent darts but not worth $60.I do like the balance on them so I am going to buy another set at some point to see if the grip lasts longer this time. If it does they are 5 star darts easily