Be confident in your purchase, we are a certified MADI Dealer. How cool is that?? Features: Single or Double J Design Allows Top and Bottom Conductor Brushing Works in All Shot Gun Sticks and Universal Sticks Strong Durable and Light Weight Base Wire brushes are easily replaceable. Available here. Wire Brush Accessory (use 5/32? Allen Key) J1590 ? up to 1590 MCM The Madi Hand J Lineman Wire Brush features Dual Attachment for Hot Sticks or Shot Gun Sticks. Can be used with one or two brushes. Sure Grip handle ensures maximum control.