The only difference is the size of the hammers for the scale of the work. Jewelers should start with the HMR-1 thru 5 Set. Metalsmiths who forge and form heavy stock will pick up one of these larger hammers in the HMR-101 through 105 Set. Those working on very small metal work will appreciate the scale of the HMR-401 through 405 Set.

This set includes; 

• Silversmith Planishing Hammer (7.6oz HMR-101)
• Silversmith Wide Raising Hammer (7.0oz HMR-102)
• Silversmith Narrow Raising Hammer (6.5oz HMR-103)
• Silversmith Large Embossing Hammer (7.0 oz HMR-104)
• Silversmith Small Embossing Hammer (6.0z HMR-105)