Introduced with the range refresh in 2010 and still in use well over a decade later on most Black Panther snares, apart from a few special editions and the Design Lab Artist series. From Mapex...

Mapex’s new piston-style throw-off is incredibly smooth and requires minimal effort to operate. The adjustment dial employs “micro-lock” technology that provides a tactile “click” as it’s turned, allowing precise control. The cylinder-drive strainer and butt-end adjuster uses a self-lubricating bearing to ensure smooth operation.