Due to the size, these cartridges are perfect to work with SMD, under a microscope, or with conventional components JBC C210018 Knife Cartridge Soldering Tip Highlights: C210 cartridges are appropriate for precision soldering jobs with medium power requirements. Due to the size, these cartridges are perfect to work with SMD, under a microscope, or with conventional components. Works with T210 Precision Handpieces Due to the size, these cartridges are perfect to work with SMD, under a microscope, or with conventional components. C210018 - Knife Cartridge 3.4 x 0.3 - JBC Tools JBC Soldering Tip JBC C210018 Soldering Tip, Cartridge, Knife, 3.4 X 0.3mm, 7.6mm L, C210 Series SMD Soldering Tip C210 cartridges are appropriate for precision soldering jobs with medium power requirements JBC C210018 | Soldering Tip Cartridge T210 Iron - 3.4 Knife Soldering Tip Shape/Size: Knife Shape - 3., 4mm(0., 134Inch) x 0., 3mm(0., 012Inch) Compatible with the JBC T210-A Precision Handpieces