Features： 1、Wide Application: This hand sanding file block has a wide range of applications and can be used for home cleaning, drywall sanding, fine sanding, rust and paint removal, automotive repair and paint stores, carpentry wood furniture manufacturing, metal fabrication stores, and more. 2、Flexible Curvature Adjustment: This hand sander block can be set and fixed as flat, concave or convex depending on the angle of the surface to be sanded, the long board manual sand filing block will maintain this angular shape throughout the entire sanding process making it easy to get the sanding job done quickly. 3、 ABS Block Base: This drywall hand sander is made of ABS block base, which is sturdy and wear resistant, not easy to be damaged, and seems to have a long service life. 4、Hook And Loop Design: This dust extraction sanding block features a hook and loop design that works great with standard loop sandpaper for quick and secure attachment and removal of sandpaper. 5、Convenient To Carry: This longboard hand sanding file block is lightweight, which is very convenient to carry and use, and can be used in a variety of situations. Specification： Item Type: Hand Sanding File Block Material: ABS Package List： 1 x Hand Sanding File Block