Alvin - Auto-Feed Desk Mount Pencil Sharpener - The Alvin Auto-Feed Desk Mount Pencil Sharpener sharpens standard and jumbo-size pencils. Spring-loaded mechanism automatically feeds pencil into hardened steel cutting blades while an auto-stop feature prevents over-sharpening. Point adjustment system controls point length. Large capacity shavings cup slides out for easy cleaning. Table mounting clamp included. Alvin is one of the primary sources for drafting supplies and drawing equipment in the country. Creative Coldsnow is a pround retailer of Alvin graphic arts, drafting and fine arts products.