The wood plate is a dedicated training plate for skin-friendly crimp training. Made from high-strength walnut wood, the edges are rounded and tapered. This taper reduces stress on the skin and provides an exquisite grip. Improved holding power dramatically increases your limit grade. Train your fingers with the wood plate and push your limit grade higher. Set Contents: Width 11.7cm x Height 4.3cm A set of 2 plates each of 15mm and 12mm thickness. Dedicated wood screws included (3.5 x 32mm) A stronger 9mm/6mm set is also available. Notes: Do not use mounting screws with a shaft diameter of 4.0mm or more. There is a risk of the plate cracking under load. Use the included wood screws (3.5 x 32mm) or 3.8mm course thread screws (32mm or longer) for installation. Tighten the final turn by hand. As the product uses natural wood, there may be slight variations in width and height. Custom sizes are also popular. (1500 yen per pair) Thickness can be made in 1mm increments from 3mm to 15mm. 15mm or more is also possible. Examples: Thickness 7mm, 4mm, etc. Size changes, width 9.0cm x height 3.5cm, etc. Please inquire separately.