Grays, rubber-tuned G-balls. I've added more rubber than before. The ball size is about 15mm. The ball material is elastomer. It's an intermediate size between Koike 13mm and Koike 17mm, what do you think? The rubber is made in subdued colors. Hooks around #1 to 1/0 are recommended. Please check the colors from the photos. No claims, 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