iFixit Precision Bit Driver: Aluminum, Magnetic, Fits 4mm Bits
iFixit Mako Precision Bit Set - 3DJake UK
iFixit Manta Precision Bit Set, Bit-Kit with 112 bits (4 mm & 1/4 inch) for DIY Household Projects and to Repair Electronic Devices Like Smartphones : Amazon.co.uk: DIY & Tools
IFixit Mako 64 Bit Driver Kit Including Screwdriver + 64 Bits | OcUK
IfixIt Electric Driver? Why nobody is talking about this! Hint: It could use some work. - YouTube