This is my overall favorite 1x18650 zoomable flashlight because it is so versatile. This flashlight features nice anodizing, and great overall construction. The body of this flashlight is heavy duty, with a high-quality thick aluminum tube body. This host is "clean", with no external markings.
Just add a 16mm MCPCB and 17mm Driver.
Custom Build Service
For an added cost, I will build and test this light for you. Just check the box and also add your choice of 17mm driver and 16mm LED to your shopping cart. If you add more than one LED or driver please specify in the comments section of your order which you would like me to use in the light. This service may add 4-5 weeks to your total order shipment time.