TADAF4406 Features: -Precision Machined Block. -Hard surface tension. -Perfect for hard to sand areas. -Dura-Block Tear Drop Sanding Block. Product Type: -Coated Abrasives. Generic Dimensions: -Flexible - designed to fit a standard 9" x 11" wet or dry sheet of sandpaper. -PatentedThe "tear drop" adds a rounded curve with a flat surface for hard to sand areas. Designed to fit a standard 9" x 11" wet or dry sheet of sandpaper. Block dimensions allow for perfect fit for 100% use of the sheet without cutting or tearing.. Dimensions: Overall Product Weight: -0.25 Pounds.