BLUFIXX, The Lightcuring Repair Gel Pen This BLUFIXX repair pen comes as a complete kit including the repair gel cartridge, Bluelight LED for curing, and holder. Everything you need to get started right away Cartridges and led light batteries are easily replaceable. BLUFIXX allows you to easily repair, fill, reconstruct and mold The Repair Gel cures rock solid, instantly, through the LED. Perfect for metals and metal alloys: aluminum, steel, brass, stainless steel, galvanized materials, copper, and iron. Also works for glass, crystal, stone, porcelain, ceramics, marble and earthenware. Gel remains liquid and malleable until exposed to LED light. Once cured, you can grind, drill, varnish, paint, and polish it.