... with 5.5mm diameter , so that you can inspect area under water, gaps and holes. Optional Cable (2m/ 3 m) ... flexible and removeable extended tube3.Manufactured and tested to water-proof level IP674.Increase visibility with 6X digital zoom ... Inspection,Boiler Inspection,Aviation Maintenance,Power Plants,Wind Turbines,Water Treatment Plants,Equipment Maintenance,HVAC,Plumbing,Manufacturing Building ...