THIS IS A TAMA MODEL # ML 12 MEMORY LOCK FOR TAMA BOOM ARM'S 10.5mm-12mm.IT HAS A CURVE TO FOLLOW THE DESIGN OF TAMAS CENTER ADJUSTMENT/OR CONVERTER ROUNDED PART OF THE BOOM STAND TO KEEP MEMORY.I USE THESE ON ALL MY TAMA BOOM STANDS.YOU CAN LOOK UP THE PART #ML 12 ON TAMAS SITE.5OUT OF 5.
I tried these memory locks for the newer Tama boom stands. Big mistake. Tama wasn't looking forward when they designed their stands because there's nothing for these to lock into, ala DW or Gibraltar's. You'd be better off buying another brand's stands whose memory locks actually lock into something.