Preston Innovations ICS Elasticated Stem Kits are available in 2 strengths: Standard or Heavy, and 2 lengths: Long or Short. Simply tailor the stem length and elastic to the situation. Standard Elastic is suitable for small/medium carp & F1s, and the short stem is ideal for high catch rate venues as less stretch allows you to land the fish quicker. Heavy Elastic is for larger carp, and longer stems allow far more elastic to stretch from the feeder, perfect for big fish and days where every fish counts.