Tipton 1911 Magazine Well Vise Block Features: - Supports your 1911 handgun for cleaning and light gunsmithing. - Mounts to your bench top or works with the Tipton Best Gun Vice sold separately. - Mounting hardware included. - Securely locks into your 1911 magwell using the magazine lock on your receiver. - Arm rotates 180 degrees in 15 degree increments. Locks into any of these positions. - Built-in barrel bushing wrench allows your to easily depress and release the recoil spring without marring the gun..