STTC Soldering Cartridge, Conical STTC-844 Conical Sharp Bent 30 Long Reach 0.5mm x 14.5mm (.02" x .57") Features and Benefits: STTC Cartridges provide a wide range of options for through-hole and SMD Rework. For use with the MX-500 and MX-5000 & MX5200 Systems and with the MX-RM3E and MX-H1-AV Handpieces. 800 Series for Ceramic and high thermal demand applications.