This block is functionally similar to GMP's D Cable Block. This larger tool can be used with the G Cable Lasher to handle cable up to 5 in. (127mm) dia. and features strand hooks to accommodate 3/8 – 3/4 in. (10-19mm) diameter strand. This heavy duty block is made from 100% heat treated aluminum alloy. Contains two vertical side rollers in addition to the cable sheave to minimize cable friction during pulling in.