Rigid terminal cup made from virgin high temperature ABS material. The 4mm thick walls provide extreme rigidity to prevent unwanted vibrations. Cup is pre machined with 2 23mm holes and two 11.11mm to easily mount speakon or XLR type or 1/4 jack connectors. Easily to machine yet rugged enough for PA cabinets. Terminal cup has 6 long legs to accept a pc board. Excellent for use with L pads, binding posts, jacks and other related input connectors