+3 Excalibur Dualfire Crossbow Stringer 74391 C $29.99 For MicroSeries Crossbows only. Constructed of BCY DynaFLIGHT 97 material, Excalibur's Micro Crossbow String reduces creep while increasing speed. It also features a new proprietary center serving which will give you increased string life. In stock Quantity: 1 Add to Bag Product Details UPC: 626192743916 Brand: Excalibur Save this product for later Favorite