Re-arrange your modules in seconds! These things are great, they can be securely tightened with regular finger tightening without using any tool. They can also be tightened with a regular screwdriver.
M3 size, come in packs of 100 with the washer already on the screw. They do not work with M2.5 racks so check first.
M3 is the standard Doepfer size, we sell all our kits with M3 screws. The majority of ready built retail modules come with M3 screws also.