The uniquely designed hook and loop longboard hand sanding file block features a bi-directional design system for use with both hook and loop and PSA longboard sandpaper sheets or rolls. Includes an attachable PSA conversion adapter pad with a vinyl that converts the longboard file block for use with PSA pressure-sensitive adhesive sandpaper sheets. PERFECT HOOK AND Loop Design: The hand sanding block repair tool is designed with a hook back that can be used with standard ring and ring sandpaper, allowing you to quickly and safely attach and remove sandpaper. High-quality materials are reliable and : light weight, better sanding and smoothing effect, comfortable to hold, and larger contact area. Wide range of application: Manual are widely used in woodworking furniture polishing, car polishing and waxing, sanding, rust removal, paint stripping, wall polishing, etc. Perfect as a high-performance paint prep longboard hand sanding block, the pad's hook-and-loop and PSA backing allow for quick, secure installation and removal of sandpaper for optimal sanding disc life.Premium longboard hand sanding block, which is the standard width for longboard file sandpaper. You can easily adhere the Pressure Sensitive Adhesive Longboard File Sandpaper piece to it. This block is easy to grip for even control when sanding flat, tight corners, and other hard-to-reach areas., Weight: 2.03707130088 Pounds, Manufacturer: Xnuiasqe