This listing is for a Prestacycle UniBlock Pro 12 Speed Cassette. It features a one-piece chromium-molybdenum alloy steel construction, making it ultra-light and durable for maximum life.

The cassette is designed for HG10, HG11, or HG12 freehubs and has an 11-30 tooth range (11-12-13-14-15-16-18-20-22-24-27-30). It weighs 183 grams and is in excellent, like-new condition, appearing unused and still in its original packaging.