The RCBS Carbide 3-Die Set for 45 Colt (Long Colt) #19112 is a reloading die set for both handgun and rifle ammunition. It is designed for the 45 Colt (Long Colt) caliber and is made in the United States. The set includes three carbide dies for sizing, expanding, and seating the bullet. It is not a custom bundle and is manufactured by RCBS, a well-known brand in the reloading industry.