This will fit any 2020 aluminium extrusion frame Such as CR10 ,Ender3, Geetech A10.
You will need x2 extruder T-nuts to secure this to the frame. I got mine here: https://www.amazon.co.uk/gp/product/B07KFJLCLY/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
This tool station holds the supplied tools from Geetech: Nozzle wrench / x3 Allen keys / Nozzle cleaner / Bowden tube cleaner.
It also holds my cutters that I got with my Anet and a craft knife which has a 10mm diameter (the same as your average pen)