• What Makes The Differences - GAN 251 M Air has unadjustable corner magnets but no magnet in the core. That reduces the weight, and the cube turns very straightforward. Both Pro and Leap have the same corner core adjustable magnet system, and Leap has much bigger magnet in the core. Overall, two versions perform consistently good, Pro has better stability and Leap has faster speed.
• Various Tuning - It is equipped with 2 kinds of nut distances, 4 levels elasticity, and optional 3 settings of magnets(Pro & Leap). 

GAN 251 M Air has unadjustable corner magnets but no magnet in the core. That reduces the weight, and the cube turns very straightforward.

• GAN251 v2: The Next Evolution in 2x2 Cubing - The new GAN251 v2 offers a larger size, a lighter frame, and an even smoother turning experience. 
• Effortless Tuning with GES+ - Equipped with the latest GES+ technology, the GAN251 v2 brings noticeably improved turning dynamics while maintaining excellent control. Tuning is simple, allowing for a fully personalized cubing experience.
  
• Ultra-Light, Ultra-Fast - Weighing in at just 47 grams, the GAN251 v2 is a featherweight powerhouse. This reduced weight enhances both hand feel and turning speed, offering an exceptional balance of comfort and speed.
  

• The GAN249 features an innovative honeycomb design on its corner contact points, delivering a smoother feel and extending lubricant life. 
• Equipped with GAN’s patented IPG core, this 2×2 speed cube offers improved turning that’s instantly noticeable while maintaining control. 
  
• Weighing in at just 52 grams, the GAN249 V2 is exceptionally light. Its reduced weight enhances hand feel and boosts turning speed, making it a true speed booster in a compact form.