McMaster 9662K19 Compression Spring Stock, Pack of 5, Spring Steel, 36" Long, 0.375" OD, 0.305" ID 10D213 Rating 194 Degrees F Jacket Rating 194 Degrees F Jacket Material Nylon Wire Color Black Number of Conductors 1 Conductor Design Stranded Wire Type Wire and Cable THHN Insulation Material (Wire and Cable) PVC Packaging Wood Reel with Fiber Drum Jacket Material Wire and Cable Nylon Insulation Material Wire and Cable PVC Wire Type THHN Stranded Solid Stranded Stranding 19 Max Range 40 Degrees to 998 Degrees F Power Source Battery Features Insulation Resistance Test Results Wirelessly with Your Smartphone Data Logging 6000 Auto Ranging Yes Output Test Voltage 50 100 250 500 1000V DC Live Circuit Detection Greater Than 30V Capacitance Range 1000 nF to 9999 uF Diode Test Yes Safety Rating CAT III 1000V Always be ready for the perfect fit Spring Rate — To determine the spring rate of a cut spring