The Metcal SMTC-8174 SMTC 800 Series Soldering Cartridge with Long Reach, .045 x .65 in. (1.14 x 16.51 mm), 60 Degree Micro Hoof, is designed for reworking 0201 and 0402 or microfine components in tight spaces with the help of a microscope. The long reach micro hoof tip is suitable for a smaller surface area than the mini-hoof, providing optimal drag soldering of components in tight spots. 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 800 Series heater, which is ideal for most ceramic and higher thermal demand applications applications.