Features: 1. High hardne and good electrical conductivity 2. Electrical maintenance / screwdriver aistance 3. Humanized clip-on design for easy electrical maintenance and portability 4. Fully insulated anti-fall material, durable and improved safety performance 5. High-brightne LED bulb self-inspection: high-brightne works smoothly and is clearly visible in the sun Uses: Can be used in electronics factories, home appliances, car maintenance, home furnishing, etc., with a wide range of uses Specifications: Model: electrician color light metering pen Lamp beads: high brightne LED lamp beads Type: 1PC Shell material: anti-drop insulation PC Measuring range: 70-250V Bit Material: HRA Titanium Alloy Product length: 15.5m Word batch head: 4mm Exposed drill bit: 17mm Battery model:3 LR41 button batteries Packing list: Electrician color light test pen*1