Chequer Blades can be mounted on top of any cymbal stand with 8mm thread, with or without cymbal underneath:
Remove wing nut and finger tighten Chequer Blades. To adjust the angle, hold long nut with 13mm spanner, undo nut underneath Perspex base for a quarter turn and swivel blades to desired position. Tighten top nut securely, still holding the long nut.
Once correct angle is set, you can remove & refit Chequer Blades by hand, but may need to repeat above procedure for fitting onto a different stand.
Also connects via multi clamp (not included) to any existing stand.
To hear how Chequer Blades sound click here.