Continuous Cord Loop is commonly used on Cellular, Honeycomb, Pleated, Silhouette, Roman, Woven Wood and Zebra Shades Select your desired drop loop: 3ft, 4ft, 5ft, 6ft. Longer loop can be special ordered. Linear length will be double the loop length. For example, 3 ft loop has 6ft linear length D30 (2.7mm) is thinner than K35. Very popular loop. Use on smaller clutches and lighter shades. Color is WHITE K35 (3.4mm) is a little thicker than D30. Therefore it grabs the gears of the clutch tighter and has higher tensile strength. Use on larger shades and clutches. Color is OFF WHITE Fit all major brands: Rollease, Alta, Levolor, Kirsch, Rollease, Graber Crystal Pleat, Bali, Kirsch, Graber, Comfortex, Turnils, Budget Blinds, 3DaysBlind, Kathy Ireland, Smith & Noble, The Shade Store… etc Fit Hunter Douglas Shade: Silhouette, Pirouette, Vignette, Duette, Applause, Banded Continuous Cord Loop for Honeycomb, Cellular, Roman, Woven Shade