Turn any progressive press into an "ammunition factory" with the easy to use Hornady Lock-N-Load Bullet Tubes.Coupled with a Hornady Bullet Feeder die (sold separately), Lock-N-Load Bullet Tubes provide hand loaders a fast, flexible system that increases loading speed on any compatible progressive reloading press with 7/8-14 thread die-stations.With the Lock-N-Load Bullet Tubes, the hand loader can simply pre-load the tubes with bullets and place the tube in the top of their bullet feeder die. Tubes can fit 40+ bullets depending on caliber and weight and feature a milled window for visual bullet level inspection.Lock-N-Load Bullet Tubes are sold in packs of 3 tubes per caliber. Available for 9mm, 40cal/10mm & 45cal. FEATURES INCLUDE:- Lock-N-Load Bullet Tube feed bullets into existing Hornady bullet feeder dies- Tubes come in 3-packs and each can fit 40+ bullets depending on caliber and weight- Eliminates the need for a bullet feeder hopper- Milled window in tube shows when it is almost empty- Suitable for any progressive press with 7/8-14 thread die-stations- Available in 9mm, 40cal/10mm & 45calINSTRUCTIONS:Hornady bullet feeder tubes only work with Hornady Pistol Bullet Feeder Dies. Match the correct tube with the caliber of die you are reloading. Ensure there is a cotter pin in the tube, then fill the tube with bullets pointed away from the pin. Once full, insert the pin end of the tube into the adjustment screw at the top of the bullet feeder die. Pull the pin to release the bullet and push down on the tube to seat it completely into the die.