From the 150 series
Braced
Legs can be mounted both traditionally and as a flatbase variant
The extension arm can be lowered in the tripod
Uni-Lock tilting device
Plastic wing nut
Pearl BC-150S Flatbase Cymbal Stand Pearl BC-150S Flatbase Cymbal Boom Stand, 150 Series, single braced, can be quickly changed from flat-based to traditional single-braced legs by simply flipping the convertible tripod base, Uni-Lock Tilter, plastic wingnut reversable foam washer.