Tractor Post-Hole Borer Blueline – Auger Only – Choice of 4″, 6″, 9″ and 12″. Post-Hole Borer Blueline – Auger Only, Choice of 4″, 6″, 9″ and 12″. For Complete Post Borer with Auger see. Good stocks available, please message us if this listing is showing less qty than you require. Also available to collect …