This ALH1 six piece pack of 120mm replacement leads is designed for the ADP2 Deep Hole Construction Pencil.It includes 4x 2B graphics leads for marking clear, dark lines, and 2x yellow wax leads for marking on darker surfaces. Also supplied with a site holster for storing your spare leads as you work.4x 2B graphics leads for marking clear, dark lines 2x yellow wax leads for marking on darker surfaces Maximum protection built specifically for site work Great for fine line, writing, and marking deeper, darker lines New anti-snap lead dispenser Shirt / trouser clip Mark 100mm depth in a 3mm hole Mark 145mm depth in a 6mm hole Long, sturdy metal shaft Ideal for marking ceramics, wood, plastic and metal Always to hand with site holster for your pocket Inbuilt sharpener in site holster for maximum precision Ergonomic, comfortable finger grip