- Dual Lock

First Impressions
The Storm Dual Lock came out in March 2020 as an international release and shows up in a striking color combination of Purple, Gunmetal and Gold. Technically the ball is built on the asymmetric RAD-X core, which is paired with an R4S Pearl coverstock. The hard specs for 15 pounds show a 2.48 RG, a 0.054 differential and a 0.018 intermediate bias. The factory finish is 1500-grit polish, which gives the ball a shiny surface and should provide more length through the heads.
Comparison
The R4S cover is noticeably smoother than the R3S material of the Storm Snap Lock and does not create the explosive reaction at the end of the oil pattern that you see with the Snap Lock. To the bowler, the Dual Lock feels like a slightly weaker ball than the Snap Lock, with a bit less responsiveness to friction. In overall strength it sits above the Storm AstroPhysix, though the AstroPhysix is cleaner and considerably more responsive off the backend — the Dual Lock positions itself somewhere between the Nuclear Cell/Snap Lock and the AstroPhysix, but with smoother motion. The backend responsiveness is reminiscent of the Storm Parallax, but comes across as a bit less strong.
On the Lanes
The Dual Lock works extremely well as a mid-defined ball for two-handed players, while for one-handed bowlers it may fall between the established categories. The smoother character makes it far more user-friendly than the Snap Lock if you have a higher rev rate, since the quicker reaction to friction stays controllable without extreme speed. Recommended for medium to heavy lane conditions, the ball should offer a good balance between length and controlled backend motion. Surface adjustments can change the ball's character considerably, which opens up additional options for different styles and lane conditions.