Description

These are the most versatile sink tips in the OPST system. They come in 3 different grain weights(80, 110, 140). The 80 grain comes with a S2, S4, or S6 sink rate. And the 110 and 140 grain series both have S3, S6, and S9 sink rates available.

10 foot Commando Tips comes in three different sink rates: a Riffle, Run and Bucket.
80 Grain series, comes in S2, S4 and S6 of level sink tip. These tips are good for 2-weight spey rods up to about a 6-weight spey rod.
110 Grain and 140 Grain Commando Tips come in S3 for Riffle, S6 for Run and S9 for Bucket. The 110 Grain series is best for rods from about a 6-weight switch to an 8-weight switch
140 Grain Commando Tips are best for heavier rods, from about a 7-weight switch to a 9- or 10- weight spey rod
One thing to keep in mind is that if you are struggling with your cast, the solution might be to go down in tip size.