When casting large flies for challenging species like snook and small tarpon, you want a leader that will hold up to teeth, gill plates and spines. This leader features a tough fluorocarbon shock tippet that offers that protection. The main body of the leader is made of a stiff nylon that tapers down to 16 lbs. before being tied to the shock tippet. Per each. Length: 10. Available: 15, 25, 40-lb. test. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Leaders.