Yes, two discs can be stacked. It also ensures you are centred in anything you are starting to press in. I received a set on my doorstep an hour ago. The O rings are a mystery - they seem to be intended for stopping the discs falling off when you are too lazy to fit the screw in the end. Each disc has an internal groove that can only be there to engage the O ring on the nose of the long driver (the short driver's nose has no groove for an O ring) BUT it does not hold the disc against the hard shoulder, so as soon as you start pressing, the disc will push past anyway. It is a struggle to get past that inner groove by hand. The bores of the discs are very loose on the driver noses - but fine with an O ring to centre them. The short driver has an internal bore with internal O-ring groove, so it can be plugged onto the long driver's nose, but again the groove is in the wrong position. When pressed, the short driver has a hard seat internally, but it is not flat, so is wobbly. Either these things are made wrong or I need educating. I don't get why you would want to plug the short driver onto the long one anyway. These are nice to use with the O ring removed from the long driver nose (although the 12.5mm disc bore on the 11.8mm nose annoys me). Advice welcome! :)
@@idontwantachannel3091 thats exactly what I was wondering, so for driving a sealed bearing you can put the inside one on and one to fit the outside diameter!!! Of course right after i ordered for 89.99 i found a different branded one in a green case for $76.99CAD
@@idontwantachannel3091 I bought this to drive bearings in snowmobile idler wheels specifically, the sealed bearing type, so i could put say an 18mm on for the inside, and a 30mm to drive the external side, centering it on the bearing...
