Rubber overmolded surfaces and finger-hugging curves give the user a comfortable, reliable grip on the accessory so they can focus on making an accurate measurement.
The Fluke TL221 Set includes:
One pair (red, black) of silicone insulated leads with straight connectors on both ends 
Reinforced strain relief 
Includes one pair (red, black) of female couplers 
Extends test leads by 1.5 m 
600 V CAT IV, 1000 V CAT III, 10 A rating. UL listed