Corona ComfortGEL EdgeMASTER Patio and Border Edger[description] The Corona ComfortGEL lawn and garden tools were made for exceptional comfort and control. This hard wearing range of tools has been created to provide you with hand held solutions to cultivate, weed, prepare soil and maintain your property. Quick clean cuts in grass, through turf or soil Trim paths, create borders for gardens or flower beds Ribbed blade thats self sharpening, durable, fully heat treated and made from high carbon steel