Ultral ap is a thin polyester plastic sheet, precoated with the polish It can be run at higher speeds because the polish is bonded in place. Ultra lap will often solve scratching problems. Plain Ultra lap is held to the Master Lap by a water film. Ultra lap comes in packs of 5. They provide superior polish and are a must for any faceter.
Laps are conveniently color-coded for degrees of hardness of stone to be polished.