NIW 2021 Louisville Slugger Genesis APG 1-Piece USSSA Softball Bat 26oz Rare 🔥! Approved for 1.20 BPF (220 Thumbprint Stamp) USSSA, NSA, ISA. One-Piece Composite Slowpitch Softball Bat. End Loaded Swing Weight -. 75 Oz End Load for the players that like that heavy end load feeling, which in turn can add more power to your swing.