Lyman Brass Smith Case Trim Xpress Bushing 300 AAC Blackout/17 Rem Fireb. The CTX press itself is a great way to reload shot shell casings by hand. However due to the ordnance involved with the CTX press the actual case preparation must be done by hand. As a result the actual case preparation can be quite time consuming and difficult to perform in a home environment. However the CTX press and the various bushings cutters and shafts required for that task must be installed in a turret assembly prior to installing the bushings in the bushings. The bushings that come in this kit are sized according to the actual case mouth. The bushings support and center the case with the cutter. No pilots are needed. The bushings are spring loaded to provide a smooth effortless cut and allow the user to trim approximately 15 cases per minute. Specifications for Lyman 7821704 Brass Smith Case Trim Xpress Bushing 300 AAC Blackout/17 Rem Fireb: Manufacturer: Lyman Caliber: .300 AAC Blackout Fabric/Material: Steel Finish: Orange Package Contents: Lyman CT XB # 4 300 AAC 17 Rem Fireball 7821704 The Lyman CT XB # 4 300 AAC 17 Rem Fireball 7821704 is a quality addition to the Lyman lineup. For more great deals on Case Trimming by Lyman please browse our Lyman Reloading Equipment page. Lyman 7821704 Brass Smith Case Trim Xpress Bushing 300 AAC Blackout/17 Rem Fireb