Ph00 + Y0.6 4mm bits

This is a set of two 4mm bits, one each of PH00 and Y0.6 (Y000) - these are the specialty sizes needed to fit the smallest screws on Nintendo handhelds (notably Y0.6 is the precise size for the GBA SP tri-wing screws).

These bits are made of S2 steel, and should last a long time before wearing out. I got tired of the red-handled screwdrivers wearing out halfway through one shell swap so I found these.