The Viper Extra Tough Tournament Leader is a high technology monofilament featuring a very high breaking strength and an extremely hard and tough surface for a very high abrasion resistance level. Its quality is almost unchanged even after many uses in stressfull conditions. Controlled stretch and great measures make this product complete.  It is also very small in diameter compared to some other leaders resulting in a far superior lure action.
 
200lb - 1.17mm
300lb - 1.33mm
350lb - 1.47mm
400lb - 1.61mm
500lb - 1.83mm
580lb - 2.04mm