Quality Universal Mini/Micro Crimping Tool, See Video In Ad, Crimper for Molex JST HRS Tyco Amp Jae etc. crimp types. (Japanese). Engineer 09 by Engineer Inc. : Amazon.de: DIY & Tools
Molex 39-01-2040 Connector Housing Female 4 Position 4.2mm Crimp (Pack of 27): Amazon.com: Industrial & Scientific