Improved Sharpening System: Our professional sharpener, featuring Controlled-Angle technology, revolutionizes blade maintenance! Its industrial angle adjustment system allows for precise settings from 15° (for Japanese-style sushi knives) to 30° (for heavy-duty outdoor axes). The integrated precision scale ensures accurate adjustments and a stable, safe sharpening experience. Two Modes of Use: Our portable sharpening system offers two convenient options. For outdoor use, it is easily held in your hand. Indoors, securely attach it to a desk thanks to its unique reversible design. This construction allows you to easily flip it over during grinding, optimizing comfort and efficiency. Our kit adapts to your needs. Complete Sharpening Stone Set: Our kit includes 12 premium stones with varying grits for all sharpening stages. Compatible with blades wider than 1 cm, thicker than 4 mm, and longer than 18 cm, this system ensures a smooth grinding process. From coarse to ultra-fine grits, these stones precisely preserve the edge of your blades. Stone Polishing Set Sharpening: Our beginner sharpening set includes a set of sharpening stones to meet the different sharpening stages. Four bituminous stones (120, 320, 600, 1500 grit) must be soaked in water before use, while three diamond stones (240, 800, 2000 grit) can be ground from coarse to ultra-fine without water or oil. There are also four natural stones (800, 3000, 8000, 10000 grit) and a leather strop. Simplified maintenance: Whether you are a professional chef or an amateur, this system effectively maintains your blades. Keep your kitchen knives sharp and ready for all your culinary tasks. Invest in our sharpening system and rediscover the pleasure of precise cutting!