NO-RISK, 100% MONEY BACK GUARANTEE - Because we're SO confident you'll love our product, it's backed by our 100% money back guarantee. If you don't love it for ANY reason, we'll refund 100% of your purchase price. 8 SETS | 24 PCS SHAFTS - Package includes 24 Pcs aluminum shafts, AND rubber O'rings are installed on dart shafts to prevent loosening. EASY TO INSTALL - Designed with locking hole to allow you to use leverage to tighten the shaft to dart barrel. AIRCRAFT ALUMINUM - Made of solid aircraft aluminum with anodized finish, more durable than PVC shafts. 2BA SIZE THREAD - The dart shafts are compatible with all 2BA size dart screw thread. Length without threads: 41mm | 48mm.