Norton Sharpening Stone 75mm Grey SKU: 262507 MODEL: 66253183425 Error. try again later You've successfully joined the club $ 29 .98 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants Handy round combination stone. Features and benefits Touch up sharpening of axes, hatchets and bush knives. Small portable stone suitable for hunters, hikers and frosters.