piezoelectric needle selector for Lonati hosiery machine,WAC Data Boards is a Piezoelectric Knitting Machine Part. One of my friend produces the below parts for LONATI hosiery machines: piezoelectric needle selector for Lonati hosiery machine , 2 wire WAC data boards, 3 wire WAC data boards, wireless Matrix . if you need any further info, you can contact with her directly. thank you. ...