Helix Balance Duo Two Hole Pencil Sharpener and Eraser (Assorted Colours) : Amazon.co.uk: Everything Else
Plastic Double Hole Pencil Sharpener
Pack of 12] Pencil Sharpener Colourful Compact Dual Holes with Container School | eBay
Staedtler Double Hole Pencil Sharpener, Two Holes for Standard Pencils, Large Colored Pencils, and Makeup Pencils, 512 001 BK : Amazon.co.uk: Stationery & Office Supplies