All the stationery in my shop is drawn from my own holster! Sharing my illustration toolbox with you, these items are my personal favourites, go-tos for myriad illustration and lettering jobs, and here for sale in my shop.
 
Brought to you direct from Japan, the Pilot Super Sign Pen from Japan is an elegant, glossy black-cased pen with a plastic nib, available here in three weights: Fine, Medium and CHUNKY. Gold lettering makes it feel real fancy.
 
With its black waterproof ink it's massively versatile and good for creating outlines you want to add a water-based ink or paint to afterwards; they'll stay put.
 
Check the pictures for an idea of the line quality.
Not refillable (I wish they were).