PDP PDAXMG6QG Concept Series Quick Grip Cymbal Boom Arm with Mega Clamp - Long - 16.5"Concept Cymbal Boom Arm with Mega Clamp. At the center of the Concept Series line of hardware is an innovative toothless QuickGrip clamp that allows drummers to add mountable percussion instruments, cymbals, accessories, and even microphones, without the need for additional stands. It also gives players the ability to customize just about any existing stand in a myriad of ways. The sturdy, all metal constructed clamp is outfitted with a friction disc