Top positive review
12 May 2018
Machined cut edges of the screw has granules. All the four of them works however you have to be very careful when you install new batteries on each of them, cause the PCB directly comes in contact with them with a help of a spring. Sometimes the led copper connection gets bent while doing so. PCB should have been stationary then there wouldn't have been any hassel.
After one month someone hit and cracked the assembly so it's really that simple to destroy it. Might be the kids playing or while I was driving.. But when they were working the feeling was great.