Gemini Uptide Insert Assembly KitsUptide inserts are intended for use from a boat or pier and enable the strong grip required for uptiding. They work by transferring the weight back away from the grips giving greater grip on the sea bed.Kit contents: 4 x Uptide Inserts (short or long) 4 x Black Breakout Heads 16 x Extra Long Breakout Grips and PVC Sleeving.