The Tracer Professional Clog Free Deep Hole Maker Complete Set includes a deep hole pencil with site holster, double tipped marker pen with site holster and six 120mm leads with site holster. Both the marking pencil and pen have deep hole capability. The marking pencil can mark 100mm depth in a 3mm hole and up to 145mm depth in a 6mm hole, whilst the marker pen can Mark 50mm depth in a 5mm hole and also has a reversible tip for interchangeable thin and thick lines. The six 120mm leads include 4x 2B graphite leads for clear dark lines and 2x yellow wax leads for darker surfaces. Features and BenefitsIdeal for marking ceramics, plastic, wood and metal. Contentsdeep hole pencil with site holderdouble tipped marker pen with site holster120mm leads with site holster (x6)