This is a simple grip that allows you to get a better hold on a slick oil filter. Made for the Subaru Legacy/Forester/Impreza/WRX standard oil filter (66.5mm, 14 flats).
K&N PS-1008 pictured.
Features a funnel at the top, drip channels and a reservoir in the bottom to catch and hold the oil that drips when the filter is loosened.
Printed in no-name PETG, so had to go really slow.
25mm/s, 250c/80c, 100% extrusion.
First layer: 0.4", 200% extrusion, 50% speed.
I've had better luck with eSUN pETG, which I can print at 40mm/s.