Pearl Boom Cymbal Stand (BC150S) The B150S is a light weight, highly-portable cymbal stand featuring an exclusive low-profile flush-base design that is convertible to a traditional tripod base. Uni-Lock gearless tilter assures slip-free performance at virtually any angle. Boom tilter can convert stand into fully straight positioning. Reversible felt/foam cymbal washers change cymbal response, feel, and sound.