The Supergrip Mechanical Pencil is a 0.5mm leaded mechanical pencil with a sliding sleeve to prevent lead breakage and a replaceable eraser. These Supergrip Mechanical Pencils feature a rubber grip for comfort and a sliding sleeve which allows only a minimum of lead to protrude, cutting down on breakages. As the lead is used the sleeve retracts into the barrel, and it can be retrieved by pressing the top stud. The Supergrip Mechanical Pencil is perfect for home, office or student use. Mechanical Pencils offer the benefits of a pencil with the longer-lasting advantages of a refillable pen. Ideal for everyday note-taking, form filling or sketching.