Our passionate engineering team works worldwide to perfect this product, and patented different inventive ideas starting in 2009. In 2019, we established Stellen and created DOER! We have redesigned our products to develop DOER 12-functions-in-one-box for improved work efficiency and portability. It is new, improved, and way more badass! It's DOER - The Most Compact Tool Shed You've Ever Seen!

We are passionate and ambitious to expand the DOER product line to all handheld power tools in the future. Our innovative founder set the pace by inventing the ONE(1)GripTM (patented in 2017), which consists of a detachable battery from the POWERhandleTM, to allow it to be compatible with different power tools, such as angle grinders, routers and more.



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We are passionate about perfecting this patented product. We started Stellen and created DOER ! We re-engineered and re-designed multiple aspects of the product to make it more reliable. And we added way more functions to make DOER 12-functions-in-one-box. it's new, improved and way more badass. it's DOER- The Most Compact Tool Shed you've Ever Seen!