The Acer AMK1 kit includes an Acer professional deep hole pencil along with a 6 piece lead pack. Thanks to its unique 120mm retractable, interchangeable leads, the Acer deep hole pencil can mark through holes in beams and joists with ease. The 6 piece lead pack includes yellow leads for marking darker surfaces, making the pencil even more versatile. Whether you are a plumber, electrician, handyman, tiler, roofer, kitchen fitter, bathroom fitter, carpet fitter, carpenter, joiner or cabinet maker, the Acer Marker Pencil is the ultimate tradesmans mark for everyday use. Features and BenefitsSturdy stainless steel shaft provides protection for the lead and allows marking through deep holesIdeal for through holes in beams and joistsInterchangeable leads include yellow colour for marking darker materialsErgonomic, comfortable finger grip designIntegrated 'High Grip' belt / pocket clip ContentsAcer Professional Deep Hole Pencil6 Piece Lead Pack (Black & Yellow)