Finest quality sharpeners made in Germany with extra-hard, high carbon steel blades. Spring-loaded Dynamic Torsion Action of each blade reduces friction and improves sharpening ease. Precision molding/machining of inner critical parts sets up optimum cutting angle. Sold by the counter-top display cylinder, bucket or box, they are available in a variety of materials, shapes, sizes and hole combinations. All single hole sharpeners are for standard size pencils. All double hole sharpeners include one hole for standard pencils and one hole for giant pencils. All use replacement blade No. 530S unless otherwise noted.Magnesium, double hole left handed sharpener