Compatible Model: Only compatible with 250-Watt Magic Bullet Blender (MB1001 Series). Compatible Model: Only compatible with 250-Watt Magic Bullet Blender (MB1001 Series). Incompatible Models: Does not work with Baby Bullet, any Nutribullet, or any NutriNinja. Material: Made of food-grade plastic and stainless steel. Each replacement blade includes a gasket and hard plastic gear at the bottom. Before use, check each gasket to ensure it's undamaged and properly seated in the blade unit. Great Functions: This Replacement Cross Blade is good for chopping, grating, mixing, and blending foods like onions, cheeses, meats, smoothies, sorbets, and frozen drinks. Also ideal for making refreshing frozen cocktails, mocktails, milkshakes, homemade hummus, creamy soups, or baby food. Package Includes: 2-Pack replacement blades; Size Details: 3.31 inches (8.4 cm) in outside diameter; 2.09 inches (5.3 cm) in height.