The BENCH-SOURCE case neck annealing machine is used exclusively to anneal and refurbish your Bottle Neck and Long Straight Wall cartridge cases for reloading. It will restore your case necks to 'like new' condition and extend the life of your cartridge cases. The net result is reduced reloading cost and improved accuracy. The uniformity of case neck tension will allow you to seat your bullets with less run out and more consistency in your reloads. Can be used with one or two heat sources since the cartridge case spins on a stationary spindle while heating. Heating times can be adjusted from 1.5 to 10 seconds. Manufactured out of aluminum and fan cooled; no plastic to bow or w Mfg: Bench-Source