For me it's an extra fine Pilot Vanishing Point. It's a fountain pen but the nib is extremely fine because it's made for the Japanese market. It's basically the uniball but better and even finer and you never have to replace it.
And a bunch of mechanical pencils from 0.3 to 0.7mm.
>>12495478Good, but runs out of ink too fast.
>>12495531I absolutely hate thick pens, I always end up making a mess.