... LED UV spot curing LED UV torch Dia: 3,4,5,6,7,8,9,10,15,20mm Mini portable ... : 3,4,5,6,7,8,9,10,15,20mmMini Torch LED curing light.UV mainwave length: 365nmLED lamp light lifetime: ... 20000hoursDia of LED UV spot light: 2/3/4/5/6/7 ... /8/10/15/20mmWork time: 4.5Hours on batteryOne set: ...