This is an sale for (6) boxes of (2) per box new SCR modules. This are high power electronic SCRs used for motor control. Data sheet is easy to search for. These retail for $130 new, each. The (12) new in box units are never used, one box opened for photo. Photo is from recent sale as I have multiple cases of the same item. Each will be listed separately. Please contact for more units than shown in sale. Winner pays actual shipping cost, weight is estimated. Please contact for partial qty.