Sufficient quantity: equipped with 2 welder pencils and 48 pen cores, 4 boxes in total, 12 for each box, sufficient quantity to meet your daily use needs Luminous metal mark: A 2mm round filler can place a luminous mark, which is not easy to erase compared with a soapstone pen. The reflective mark can provide visible marks for welders and pipe fitters on metal and oily surfaces Easy to use: Each welder pencil has a built-in sharpener, which is convenient to quickly sharpen the pencil core. There is a clip on the top, which can be fixed on the clothes, bringing you a lot of convenience Applicable to all kinds of surfaces: almost any material surface or texture can be marked with this universal carpenter pencil, such as oily, rough, smooth, wet, dry, freeze or surface, applicable to buildings, cars, bowls, metals, plastics, glass, wood and paper Erasable and inconspicuous: these refills are water soluble. When you mark wrong or make the original position more beautiful and traceless, you can wipe them with a wet cloth; Painting on dark surfaces is no longer a problem Material: Metal colour: As shown Package Contents: 2 x welder pencils 48 x pen cores( 4 boxes in total, 12 for each box) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.