Used to stud my own boots using those cheap screw ins from ebay. Better than nothing. But Rockgrip studs are in another league altogether. They don't fall or tear out like the ebay ones, are much harder so don't wear down, and grip better by a large margin. They represent great value for money. But what price can you put on safety? You might ruin your session, snap a rod or an arm, or fall in the water. It's a no brainier. Highly recommended Just don't wear them around the house or you'll scratch your floors!!