The DWSM788 Dogbone. The Heavy-Duty DWSM788 Dogbone Features a Quick-Release Ratchet at Both Ends That Accomodates Any 1/2" Arm. At 8" Long, It Can Be Added to any 1/2" Arm or Rod for Easy Placement of Additional Drums, Cymbals or Accessories. Includes DWSMMGM V Memory Lock.