Thermaltronics M7BV350 Bevel 60deg 1.78mm (0.07") interchangeable for Metcal STTC-147 Temperature: 700 Series For Use With: TMT-9000S-1, TMT-9000S-2, MX-500, MX-5000, MX-5200 Tip Style: Bevel 60deg Tip Width: 0.07" (1.78mm) Tip Length: 0.55" (14.00mm)