The Rock Chucker Supreme press has been lengthened to allow easy loading of today s longer cartridge designs. With easy operation, ambidextrous handle, outstanding strength and versatility, the Rock Chucker Supreme is ideal for beginners and pros alike. Accessory Base Plate not included. Lengthened design allows easy loading of today s longer cartridge designsEasy operation, ambidextrous handle, outstanding strength and versatilitySpecifications and Features: Compound leverage system Heavy duty cast iron for easy case resizing 1" ram bearing surface Toggle blocks and links of ductile iron Pins ground from hardened steel Works with RCBS Shotshell dies Milled slot and setscrews accept optional RCBS automatic primer feed Without Die Holder