4 Blades Design: The portable bl for milkshakes and smoothies features a powerful motor base and 4 food-grade stainless steel 3D blades. The cutter head is made of SUS304 stainless steel. One More Bottom Cover: The mini bl includes an additional bottom cover. After use, the motor can be removed and replaced with the cover for easy storage. Easy to Clean and Operate: The personal bl can be disassembled for cleaning. Simply open the cap to drink and remove the bottom for thorough cleaning. The compact bl is simple to use with just one button operation. Food-Grade Material: The small USB bl is made of food-grade, non-toxic, and environmentally friendly PP and ABS materials. Safety Protection Device: A safety lock mechanism is located at the base. If the bottle and motor are not securely tightened, the bl will not operate to prevent accidental injury.