Features & Benefits
- 6 different sizes: 7/8'', 3/4'', 5/8'', 1/2'', 3/8'', 1/4''
- Made of high quality bearing steel for durability and long life
- High and uniform hardness and wear resistance
- Innovative drill bit expander for expanding tubes using heat
- Suitable for hard and soft copper standardized
- Perfect depth and tight fitting for easier brazing