these be decent light for navigate the wood in the dark , but if you do ... get two of they . they like to cut out often , require a sharp rap to get work again ... then they work just fine for a bit ... and repeat the entire scenario all over again . it be as though the contact be inferior and unable to provide a constant load to the led bulb . why do they send more of those stupid nylon sheath ? I have to have at least twenty of they now over the year , and have yet to actually find any use for any of they . on a positive note , they be plenty bright , and the battery last quite a while , if they would just always work as they should , they would be great ... but they just plain do not ... not at all dependable .