Shock-resistant aluminium construction with 9 black-light LEDs. Used to indicate oil, gas and water leaks (in conjunction with dye), trace powder, identify counterfeit banknotes and spot spills and stains, including pet accidents. Effectively sets light-cured resins (LCRs) during DIY and fly-tying, and effectively aids curing of gel-type polish during nail art. 30-lumen output. Requires 3 x AAA batteries. Length 90mm.