Redding Reloading 40 S&W Carbide G-RX Push Thru Base Sizing Die. Carbides last a long time and retain their sharpness for hundreds of hours between replacement. The size die shown in the photo above has a carbide sizer mandrel with push thru base feature. Other manufacturer's products may have a plastic or steel base. Carbides break easily under excessive force. For a smooth sizing without deformation use the Redding G-RX Sizer Die - Size and maintain only one size at a time. Specifications for Redding Reloading Carbide G-RX Push Thru Base Sizing Die: Manufacturer: Redding Reloading Caliber: .40 S&W Gun Type: Pistol Package Contents: Redding Reloading Carbide G-RX Push Thru Base Sizing Die Redding Reloading 96150: 40 S&W Carbide G-RX Push Thru Base Sizing Die