The Rex-Cut grind and blend kit from Rex-Cut Products Inc. (www.rexcut.com) includes a Sigma Green wheel featuring a zirconia-ceramic grain and proprietary bonding that the company says can be used aggressively for grinding-out cracks and for removing heavy welds, and a cotton fiber Type 27 blending and finishing wheel that the company says provides a 32 RMS (roughness measurement system) finish on stainless steel. The two, 4.25-in.-diameter wheels are available with or without hubs.