This was bought new with a cymbal arm but I only needed the arm, not the mount.
Dixon 7/32 Lug Nut, Header Card
4pcs Drum Wing Screw Drum Cymbal Stand Wing Nut Cymbal Quick Release Nut Screw
ERINGOGO 4pcs Drum Wing Screw Cymbal Stand Wing Nut Cymbal Quick Release Nut Screw Metal Brackets
KTUXZCI Cymbal Stand Wing Screw Nut M6 Wing Nuts Heavy Duty Metal Durable Reliable Drum Accessories Quick Release Drum Cymbal Stand Screw Nut M6 Nuts
TUXCAXI Cymbal Quick Release Nut Heavy Duty M6 Adjustable Wing Screws Drum Accessories For Performers Easy To Drum Cymbal Stand Wing Screw Nut M6 Nuts Metal Stand Nuts
