Splender for Mercurius Colour Giants. With a splender you can burnish drawings (or areas in your drawings). Rubbing over the colours with the colourless splender intensifies them. Also suitable for mixing colours. length: 175 mm, diam. 7 mm (length: 6.89 inch, diam. 0.28 inch), lead diam. 4 mm (0.16 inch).