Piston key ring (with stand BMW in-line-6 engine)

Easy to print Piston key ring, ideal size, strong, with stand
I was no able to find enought detailed, still simple to print and beauty piston key ring, so I created my own, also with stand basen on in-line 6 BMW engine

If you doesn't want to use my brand, just use one color for print so letters will be no visible as difference between surfaces is only 0.005mm