Rim Weight

From YoYo Wiki

Rim weight is a very important factor to string tricks play since it determines how long and how well the yo-yo sleeps. In order to reach the maximum rim weight, YoYoJam has developed the concept of a plastic yo-yo with metal rims, such as Dark Magic, Hitman, Speeder,etc. The idea of a full metal 1A yo-yo made with two different types of materials was made along the yo-yo society, but the yo-yo out in the market with that concept was only Evil&Poison serie.