Oros strike indicators are the ultimate solution for fly fishing. They are easy to use, durable, and smooth. You don't have to worry about losing small parts, casting off balance, or tangling your line. The Oros strike indicator has a simple design that locks the line between two foam halves. The foam halves have large threads that make them easy to screw and unscrew. The indicator works better when wet, so you can adjust it quickly on the water. To use the Oros strike indicator, just unscrew the foam halves, put the line in the slot, and screw them back together. You can move the indicator along the line by twisting the foam halves slightly.