Cleveland Golf 588 RTX CB 2.0 46/8 Black Satin Wedge Steel 588 Rotex Technology takes spin control to another level. 8% Deeper grooves and new micro-milled Rotex face pattern give these wedges the most surface roughness the USGA will allow. It's spin 2.0 Fourth generation tour zip grooves feature 8% larger walls and sharper radii than ever before. Through testing we have seen that more grass, dirt, and moisture are channeled away from the face for cleaner contact and more consistent spin. Laser milling fine tunes the roughness for more consistency and texture across the face. This allows Cleveland to reach the USGA roughness limit. Pushing this boundary lends itself to increased spin on pitch and chip shots.