The X Cell is the latest HP4 line ball from Roto Grip and brings back the famous Cell name. The Nucleus Core now features AI Tech and is wrapped around the eTrax Ultra Solid cover stock. Now I drilled my X Cell with a little different layout than I normally do because I was looking for it to do a specific thing, 4 x 4.5 x 2.5. I brought my Harsh Reality to test against it and I was quite shocked on the motion it made. Even with the stronger drilling in it, it was able to get down the lane with ease and the continuation it gives is incredible. It seems like the ball just struck from anywhere. I believe this ball is going to bridge the gap when the bigger asymmetric solids are just a little too much and the stronger symmetrical solids aren’t quite enough. Lower rev rate players will also love the strength this ball gives them without worrying about how it goes through the pins.