Allows Height Adjustment Up to 1/4" (6 mm) for Irregular Surfaces Fits on Standard 2" (51 mm) Diameter Standoff Bases (Sold Separately) Cap Diameter is 2-1/2" (63.5 mm) Made from 316 Stainless Steel Finish Brushed Stainless Steel Type For 2" Standoff Base Diameter 2-1/2" Material 316 Stainless Steel Finish/Color Brushed Stainless Steel Height Adjustment 1/4 Profile Round