Corona Clipper has added a new line of professional post hole diggers (PHD) with five new models including: the PD 60000 Heavy Duty Hercules PHD with a 10-gauge, tempered steel head and a 48-inch extra thick ash handle; the PD 40020 Heavy Duty Atlas PHD with a 12-gauge, tempered steel head and a 48-inch hollow core fibreglass handle; the PD 40000 Heavy Duty Atlas PHD with a 14-gauge, tempered steel head and a 48-inch extra thick ash handle; the PD 20000 Atlas PHD with a 14-gauge steel head; and the PD 10000 Promo PHD with a 15-gauge steel head and a 48-inch hardwood handle.