The X-10 Primer Tube Kit comes in a convenient 3-pack, allowing you to load up to 300 additional primers ahead of your reloading session. This helps improve overall round output by streamlining the reloading process and reducing downtime. Compatible with any progressive press on the market, the X-10 Primer Tube Kit ensures efficient and smooth operation, making it a great addition to your reloading setup. With this kit, you can keep your workflow uninterrupted, ultimately increasing productivity and efficiency.