Metcal mfr 1350 amp mfr 1351 desoldering systems with internal pump metcal mfr 1350 the metcal mfr 1350 features an internal pump providing up to 07 bar of vacuum suction force combined with smartheatreg technology that makes through hole desoldering easy and keeps your products safe from board damage metcal mfr 1350 desolder system internal pump 60w