Based on some user reviews in which consumers reported their experience with the blade breaking, we conducted some additional safety tests on the Cuisinart Smart Stick CSB-75.  We purchased and tested 5 additional samples of this model and did not experience any of the blades breaking.

The Cuisinart Smart Stick CSB-75 is part of the Blenders test program at Consumer Reports. In our lab tests, Immersion Blenders models like the Smart Stick CSB-75 are rated on multiple criteria, such as those listed below.

Yogurt blend: How well the model blended frozen fruit and yogurt for smoothies,

Soup puree: How well the model pureed vegetables and water for soup.

Maximum RPM: Tests conducted under no-load conditions for consistency. Results have been rounded.