Gibraltar SC-ML1 Memory Lock 1 Inch Diameter 4/Pack 4-Pack Memory Locks 1 in Package of 4 memory locks in a choice of 3 sizes: 1"-diameter Memory Lock SC-ML1 3/4"-diameter Memory Lock SC-ML34 (fits older Pearl, older Sonor, older CB, older Remo, and others) 7/8"-diameter Memory Lock SC-ML78 (fits most current Pearl, current CB, older Mapex sets, and others) Package of 4 memory locks in a choice of 3 sizes: 1"-diameter Memory Lock SC-ML1 3/4"-diameter Memory Lock SC-ML34 (fits older Pearl, older Sonor, older CB, older Remo, and others) 7/8"-diameter Memory Lock SC-ML...