The Silverbrook Inline Strike Indicators are bright, neon coloured strike indicators that will help you easily detect a fish strike when you're fishing. These strike indicators are made from polystyrene and come in their very own small clear plastic tubes. There are three colours provided in each, yellow, orange and white which will suit different light conditions. The Silverbrook Inline Strike Indicators are available in Small - 12mm There are 6 supplied per pack.