Patented TwistGuard™ extendable tip shroud meets the highest electrical safety requirements to reduce tip exposure while providing the versatility needed for most measurements New WearGuard™ lead wire wear indication. Each test lead is covered by two layers of silicone insulation; inner contrasting color is exposed when the leads are nicked, scuffed, or otherwise damaged and in need of replacement Double insulated silicone leads. TL175 test leads withstand high temperatures and remain flexible in cold temperatures. Extra-heavy duty strain relief on both probe-end and plug-end, tested beyond 30,000 bends without failure. Universal input plugs are compatible with all instruments that accept standard 4 mm shrouded banana plugs Ratings: CAT II 1000 V, CAT III 1000 V, CAT IV 600 V, 10 A max., Pollution Degree 2 TL175E also available. Includes removable 4 mm lantern tips that thread onto the lead tip Probes always show correct category rating for tip being used Environmental ratings: -20 °C to 55 °C (-4 °F to 131 °F), altitude: 2000 m (6,562 ft)