840AMU-Manual, 38 gram CO2, 3/8", Inflatable PFD Rearming Kit Manual, 38 Gram, 3/8" Thread Used On: Sospenders (Models 38MHAR-1, 38MHAR-P-1, 38MPRO-1, 38MSTD-1, 38MWB-1) Related Kit Model Numbers (38MRP-1)