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 while providing an exquisite grip. Improved holding power dramatically increases your limit grade. Train your fingers with the wood plate and push your limit grade. Especially the 6mm is a high load. Set Contents: Width 13.9cm x Height 4.2cm Thickness 7mm Includes dedicated wood screws (3.5 x 25mm) We also sell sets of 15mm/12mm with lower strength. Notes: Do not use mounting screws with a shaft of 4.0mm or more. There is a risk of the plate cracking under load. Use the included wood screws (3.5 x 25mm) or 3.8mm course thread screws (25mm 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 dimensions available (1500 yen per pair) Thickness can be made in 1mm increments from 3mm to 15mm. 15mm or more is also possible. Please inquire separately.