AO5 - White Apex micro peak Ratchet Safety Helmet. EN397:2012+A1:2012 440V a.c. (Electrical Insulation) / MM (Molten Metal) / -30°C (Very Low Temperature) & EN50365:2002 – Class 0 (1000V a.c.). Durable ABS modern un-vented shell design. 10mm micro peak for increased vision whilst working at heights. Comfort 6-point terylene head harness. Single headband size adjustment wheel, quick and precise to manipulate even while wearing gloves. Fully adjustable 4-point chinstrap with quick release buckle. A universal attachment slot enables firm fitting of a range of safety visors and ear defenders.