B-Stock Item. Refurbished by Evolution Power Tools. All B-stock and C-stock items come with a 90-day warranty. B-Grade Stock: Lightly used, appears as new. Fully inspected, in good working order. Complete with listed accessories (used) and relevant documentation. Packaging may be marked. C-Grade Stock: Used product, in fair condition. Fully inspected, in good working order. It may not have accessories or original packaging.