STAEDTLER 512 001 Double-Hole Tub Sharpener for Graphite & Colour Pencils up to 10.2mm Diameter (1 x Sharpener) : Amazon.co.uk: Stationery & Office Supplies
M+R Quattro Swing Eco Double Hole Pencil Sharpener
Pencil Sharpener Double: For All Pencil Types - Small | Heutink Arts & Crafts