Pro Series All-Purpose Deep Hole Pencil Set with six graphite replacement leads. High-quality aluminum construction that withstands job site demands. Can mark up to 100 mm deep in a 3 mm wide hole. Can mark up to 145 mm deep in a 6 mm wide hole. Holster grip for better control while working. Equipped with an anti-roll feature that prevents your marker from slipping out of arm's reach. Stored in a Tracer anti-snap lead dispenser. Set includes: 1 Pro Series construction pencil, 6 replacement leads.