The listed price is for the ball itself. Drilling services are available for an additional fee. The fee will vary depending on the specific work required, but will be offered at a price lower than that of a bowling center. We can also handle difficult IT-related work; please consult with us beforehand. We will determine the layout in consultation with a dedicated driller, using measurement sheets, etc. If you have any questions, please feel free to ask. This is a listing for a brand new Storm Top Gate ball from Hi-Sports. Please refer to the outer box in the photos for the specifications. The following is quoted from Hi-Sports: The latest Storm Top Gate uses the GI-18 solid material. Compared to the previous GI-18 material, additives have been mixed in to improve oil absorption performance, and the surface has a rough finish. However, it has a strong rolling feel, and is the product with the most backend movement in the Gate series so far. The Ignition core's characteristic of not making you feel the difference between the oily and less oily parts of the lane makes it very controllable, and makes it easier for bowlers to handle than ever before. It cuts through a large amount of oil, preventing the ball from going past the breakpoint, and from there, this Ignition core, which shows high differential and powerful torque, will powerfully return the Top Gate to the pocket with each shot. In addition, it has a high coefficient of restitution, so it is a confident product in terms of pin carry. Coverstock: GI-18 Solid Reactive Core: Ignition Core RG: 2.490 (15lbs) Differential: 0.052 (15lbs) Mass Bias Differential: 0.019 (15lbs) Flare: 6"+ Hardness: 73-75 Color: Electric/Red/Gray Surface Finish: 3000 Grit Abralon Available Weights: 12-16 lbs Fragrance: Berry Splash