– Black anodized aluminum riser legs only – Fits both Kraus Isolated Risers and Kickback Isolated Risers – Allows you to install alternative length riser legs since Kraus Straight or Kickback Isolated Risers are a modular construction – 5.5″ Legs = 8″ Straight Isolated Risers and 5.5″ Legs = 10″ Kickback Isolated Risers.