These Silverbrook strike indicators are made from polystyrene with silicone inserts for securing on your fishing line, they are buoyant and easy to see the bite when the fish takes your lure. 
They are supplied in clear plastic tubes. There are three colours, 2 hi-viz yellow, 2 Hi-viz orange and 2 white which will suit a range of light conditions when fly fishing.
Available two sizes: Small - 12mm
                                         Large - 20mm sizes.

Silverbrook Strike indicators