VistaView CableTec Cable Lacing Needle for 1/8" Cable Railings (Best for Threading Hollow Metal Posts) This is a 1/8" cable lacing needle for stringing 1/8" cable through posts for cable railings. The needle is 4-1/2" long and made of brass. This reusable tool is very helpful for quickly stringing steel cable through hollow posts for railing projects. Recommended for installing 1/8" VistaView cable railing projects.