ALM Grass & Hedge Trimmer Safety Kit Trimmer safety kit with ear defenders, metal mesh face shield and one pair of non slip gloves. For use with electric and petrol grass trimmers and other garden power machinery including hedge trimmers and shredders. Rotary dial for single handed head strap size adjustment. Flip up extra large metal mesh face shield for improved safety. Metal mesh face shield do not scratch or steam up like plastic visors. Exceeds the following safety standards: Steel Mesh Visor EN1731F, ANSI Z87.1, EN166 3B Ear Defenders EP106, EN352-1-1993, ANSI S3.19