The Forster Products U00057: Ultra Micrometer Seater Die is a distinctive non-crimping style seater die (with the exception for the 30-30). It ensures impeccable alignment by securely holding both bullet and case while the bullet is being pressed into place. The product also features a useful micrometer, which allows you to adjust the bullet seating depth to your individual requirements.After positioning your bullet near to the desired depth and performing a measurement, you can effortlessly tweak the micrometer stem upwards or downwards to reach the needed depth. This ensures your cartridge will be precisely the length that suits your needs. The non-crimping style of the Ultra Micrometer Seater Die enhances accuracy, promotes consistency, and maintains virtually flawless alignment during the process.