Product Description The CG15 combines classic wedge design with advanced manufacturing technology. Adding to our breakthrough ZIP GROOVES technology, the CG15 features a revolutionary surface roughness technology â called LASER MILLED. Using the precision accuracy of a laser, each face features a perfectly consistent surface texture â right to the conforming limit. The combination of dimensionally optimized grooves and optimal surface texture create the ultimate wedge that maximizes spin within the Rules of Golf.