This listing is for the exact pair shown in the photos. Stock ID CJ-402 is a paired set of Large Thick Ridge (Da Cu Jin ) walnuts, ready for immediate shipping.

• Stock: 1 of 1 (Single Inventory)
• Variety: Large Thick Ridge (Da Cu Jin )
• Dimensions: 40.0mm (Width) x 41.0mm (Height)

[About the Large Thick Ridge Variety]

The Da Cu Jin (Large Thick Ridge) is a highly sought-after Wenwan walnut variety celebrated for its intense physical structure. The name translates directly to its defining feature: "Da" (Large) and "Cu Jin" (Thick Ridge or Vein). Unlike varieties with fine or chaotic textures, the Da Cu Jin is famous for its bold, meaty, and pronounced surface ridges. This heavy structural relief provides a high-friction grip and deep stimulation during hand exercises.

[Characteristics of CJ-402]

• Upright Profile: Measuring 40.0mm in width and 41.0mm in height, this pair has a slightly taller, upright shape. This profile sits vertically in the hand, offering a solid and secure hold during rotation.
• Bold Texture (Cu Jin): The surface features the exceptionally thick, heavy ridges that define the variety. This provides strong friction and deep acupressure stimulation without sharp, biting points.
• Consistent Matching: This pair has been sorted for general consistency in size, upright silhouette, and the distribution of its characteristic heavy ridges.
• Daily Use: At 40mm wide, this is a substantial pair. It is best suited for users who prefer an aggressive, highly tactile grip and a heavy feel for their regular rotation.

[Specifications]

• Variety: Large Thick Ridge (Da Cu Jin)
• Stock ID: CJ-402
• Dimensions: 41.0mm (Height) x 40.0mm (Width)
• Texture: Bold, exceptionally thick ridges with deep valleys.
• Best For: Users seeking a substantial 40mm pair with a heavy, deeply stimulating texture for active hand exercises.