The Blue series weights are back and better than before! Built just for the Etec, The Blue series weights are designed with a lower engagement than our red profile but still with an aggressive shift profile in mind. The advanced profile weights offer the industry’s lightest fly weights with a uniquely aggressive ramp. Lighter fly weights results in less rotating mass in the clutch allowing for a more responsive and nimble ride. Each weight has 20g adjustability using the .85g and 1.7g magnets included. Etec 850 Stage 2 kit contains: Advanced Profile fly weights, primary spring, secondary spring, helix, bushings, and magnets.