Wilson Q-Type Case Holder .45 Colt is designed for trimming straight walled rimmed pistol cases in your Wilson Case Trimmer. This case holder utilizes an easy-to-use cross pin for secure case retention, making it simpler than using regular pistol case holders that require tapping. Some calibers may not be compatible with the Shark Fin or case holder clamp. This product is proudly made in the U.S.A.Key FeaturesCompatibility: Designed for use with Wilson Case Trimmers.Case Retention: Holds cases securely with an easy-to-use cross pin.Use Case: Specifically made for straight-walled rimmed pistol cases.