The Metcal SMTC-183 SMTC 700 Series Soldering Cartridge, .51 x .565 x 1.07 x .105 in. (12.95 x 14.35 x 27.18 x 2.67 mm), SOP-44 Tunnel, is designed for reworking SMT components, providing excellent performance during assembly, removal and cleaning. It is suitable for use with the MX-500, MX-5000, and MX-5200 Systems, and with the MX-RM3E, MX-RM6E,and MX-H1-AV Solder Hand Pieces. The cartridge is equipped with the 700 Series heater, which is ideal for most standard applications.