|The abrasive fibreglass pencil from our trusted and highly reliable own brand RS PRO is ideal for preparation and de-rusting on a range of materials such as metal, wood and plastic. It is also a great tool for accurate and precise cleaning in hard to reach places due to its durable lightweight design. The propelling action on the glass fibre pen allows more less of the glass fibres to be exposed, depending on the level of abrasiveness you want to achieve. The shorter the glass fibre, the more abrasive the action of the tool becomes. The Abrasive Pencil 4mm is a small detailing tool, ideal for sanding between edges and surfaces. It is perfect for pinpoint cleaning, de-rusting and surface preparation.The Ecobra Glass Fibre Eraser Pen erases ink, graphite etc. and cleans and removes stubborn residues of all kinds.