The disc (blades) size in the Obel Mito 75 / Obel 75 grinder is 75 mm. Key grinder specifications: Blade type: Flat, made of stainless steel. Usage: Commercial (for cafes and restaurants). Grinding speed: Approximately 1400 - 1440 grams/minute. Hopper capacity: 1.5 kg. Manufacturing: Italian. This grinder features a control screen for dose adjustment (single/double).