The Circle is made from Double edged knife steel. Rake the hoe back and forward through the soil to slice through the roots of light weeds. It lifts the weeds as it cuts, lightly cultivating the soil. The round shape means the edge of the hoe is easily identified so that you don,t cut the roots of plants you want to keep. The long 1.5m handle allows you to easily work from the standing position. A smaller diameter, short handle hoe is also available.