Replace regularly - We recommend replacing your quiet blender blade every 6 months or as needed for optimal performance Back-up Blade for YL-010 - This blade is use for CRANDDI YL-010, and Compatible with Vitamix wet blade, also use for Vitamix 1195,58625,15504,58805,15652,15643 containers Complete assembly - Twin bearing, double sealed design for better blending and longer blade life High-quality Material - Stainless Steel, 3 layer 6 leaf blade Included Components - one of blade assembly CRANDDI Spare Blade for YL-010, 011, Compatible with Vitamix Blender 5200, 6 leafs Stainless Steel Replacement Blade Set