The "Thick Ridge" (Cu Jin) Pair | 40.0mm x 41.0mm | CJ-403

This listing is for the exact pair shown in the photos. Stock ID CJ-403 is a paired set of Thick Ridge (Cu Jin ) walnuts, ready for immediate shipping.

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

[About the Thick Ridge Variety]

The Cu Jin (Thick Ridge) is a distinct Wenwan walnut variety defined by its prominent surface structure. "Cu Jin" translates to "Thick Vein" or "Thick Ridge." Unlike standard varieties that may feature fine or uniform textures, the Cu Jin variety is known for its bold, heavily pronounced, and meaty surface ridges. This heavy relief provides a high-friction grip and deep tactile stimulation during regular handling.

[Characteristics of CJ-403]

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

[Specifications]

• Variety: Thick Ridge (Cu Jin )
• Stock ID: CJ-403
• Dimensions: 41.0mm (Height) x 40.0mm (Width)
• Texture: Bold, highly pronounced thick ridges with deep valleys.
• Best For: Users seeking a substantial 40mm pair with a heavy, deeply stimulating texture for active hand exercises.