The Metcal Smartheat soldering cartridge is another quality product from Metcal. Offers a conical tip. The important aspects of buying these products, for proper sizing, are the width, length and thickness of the tip. This product comes with a tip width of 0.055 in, length of 0.59 in and thickness of. This soldering cartridge is designed to work with MFR-1160 - Soldering System, MFR-H6-SSC - Handpiece. Additional, and potentially important, information was collected about this product: Tip Sub-Series: 700