Irwin 233250 Strait-Line Carpenters Pencil Sharpeners x25 Pcs The Irwin 233250 is a box of x25 sharpeners designed for carpenters rectangular pencils. Uses 50% less pencil per sharpening cycle, 20% harder blade for longer life. Features an integrated emory board for fine point filing. Narrow sharpening angle for broader, more durable point reduced lead breaking.  FEATURES Easy sharpening of rectangular carpenter pencils Narrow sharpening angle for durable point Hardened sharpening blade for extended life Integrated emery board for fine point filing