Bottle jack pressure release knob (12x7mm spade head)

35mm and 40mm outer diameter knob that fits on cheapo-bottle jack release with a 12x7mm spade type release screw. One 40mm model with "RELEASE" text and one without.

Perfect for DIY hydraulic press projects.

EDIT I accidentally added the 35mm without text and a 40mm with text. I re-named and re-uploaded files for 35mm without text, as well as 40mm with and without text.