Coburn’s XRL lap tool is designed for long lasting curve accuracy. Composed of tough stable material, the XRL is easily processed on the SL2 or Lensmaker XRT. It has an extended curve range of -7 diopters to +20 diopters with up to 10 diopters of cylinder. The rigidity of the XRL design eliminates flexing so that curves remain true. VersaTool XRL lap tools are supplied in a semi-finished form for processing in your lab, or you can specify the curve and Coburn will finish it for you.