Increasing drum kit sizes and increasingly elaborate drum kit parts led to development of versatile modern stands, that allow cymbals to be secured and positioned in almost any position and at almost any angle.
Modern cymbal nuts come in two main varieties, the older being a metal wingnut with an extended metal thread, the more recent being a plastic wingnut in which the thread extension also serves as the mounting bolt sleeve.
These plastic wingnuts are most commonly added as an aftermarket accessory, but are not compatible with a combined lower washer and sleeve.
The top felt may even be omitted for heavier cymbals mounted close to horizontal, also to increase sustain.
A five-piece kit sold complete with hardware will typically come with one straight and one boom stand.
Such stands often use the same 20mm tube standardised by Pearl for tom-tom mounts and common on drum racks.