Grays, rubber-tuned G-balls. Ball size is 15mm. The ball material is elastomer. Since more rubber resulted in better action, I've inserted a lot of it. The rubber is made in subdued colors. We recommend a hook size of #1 to 1/0. Please check the colors from the photos. No claims and no returns. I am not currently considering price reductions or selling individual items. Feel free to ask any questions. Worm set Old Koike Dice rubber