x fasten tile grout pen restorer, white, 20 ml (1-pack) - dark spot and stain remover tile grout line pen marker for bathroom, kitchen and floor tiles grout shine pen marker x fasten <b><p>the xfasten grout pen is designed for average homeowners with little to no experience in grout restoration but still wants a neat and professional finish in the end. it has a precision-engineered pen nib that locks into position and flows the grout solution smoothly, allowing for continuous and uninterrupted application, thus resulting in cleaner lines that are just overall neat and rival the professional works contractors.</b></p><p>the issue with most grout pens is that they usually flake, break down, degrade or even fall off at the slightest mechanical stress, elevation in temperature, or even when exposed to corrosive chemicals. the xfasten grout pen has high heat and chemical resistance. also, it has an organic plant-based stabilizer and binder, which means that it provides an extra waterproofing layer to the grout lines, thus shielding it from discoloration, dark spots, stains, corrosive chemicals, and even soap build-up. grouts that are traced using the xfasten grout pens are built to take a beating!</p><p><b>why should you choose the xfasten grout pens?</b></p><p>● precision-engineered pen nibs allow for a precise, neat, and professional-grade finish, even to those with little to no experience in grout restoration.</p><p>● quality tested to ensure that it can also resist even extreme conditions- mechanical stress, elevated temperature, humidity, and acidic or alkaline substances.</p><p>● sports a waterproof binder that prevents dark spots, stains, and soap from building up on the grout lines.</p><p>● do not break-down, flake, or fall off once it has cured for 24 hours.</p><p><b>why choose the xfasten brand?</b></p><p>we follow a set of strict laboratory and manufacturing standards that are accredited by iso 9001. also, our customer service team will accommodate you any time of the day on your inquiries