you can get from any diy store,, just make sure it not wd40 or
wat ever that will eat your nails inside. ask the sale assistant
that you just want silicone spray and if they hardworking enough
they will know which one is it.
2x2 average 60sec
3x3 average 45sec
4x4,
1st solve 4hr,
2nd solve 10min,
3rd solve 12min and thats all,,, im keeping it for collection
lol
5x5 average unknown due havent intend to solve it yet