With the isolated silicone test leads Fluke TL221 with straight plugs you can extend your test leads by 1.5 m. The extensions are part of the Fluke SureGrip accessory series. Thanks to the rubber cover, you always have a firm grip on the test leads; even with slippery fingers. The TL 221 test lead extension is supplied with a pair of sockets (female, red and black).