Cable Layer Treaded BS8020 SHOCKSAFE. Often known as a '1-way' in some trades. Designed for cable and pipe laying with a slim blade that is ideal for digging out narrow trenches. Our entire BS8020:2011 insulated shovel range is treaded as standard. Integrated treads provide better grip, increased comfort and protection to the user's feet. Tested and made in conformance with BS8020:2011. Tools for live working.