The Tama Square Field Frame Accessory Clamp will attach to square tubes on most brands' rack carts that have 1.5" or 1.75" wide tubes. You can attach round boom arms to them easily to attach cymbals and accessories to your marching instruments.
The spring-loaded boom arm clamp also swings entirely open, meaning any size of boom arm can fit! These clamps will work for more than just Tama instruments, as well.
