Monster M Series Lock Angled Spades Modular Speaker Cable Termination (2 pr. Medium)
Modular Speaker Termination for Attachment to Monster Lock  Master PinDimensions: Width on the Opening of the Spade.Medium Spade - .250 in. (6.6mm)Large Spade -     .330 in. (8.4mm)X-Large Spade -  .390 in. (10mm)