Micro Jigs GRR-Ripper 3D Pushblock is America's top-selling and most trusted adjustable pushblock on the market. Use on table saws, router tables, jointers, and band saws to work more safely and with more control, especially with small stock. The GRR-Ripper features Micro Jigs proprietary non-slip Green GRR-RIP High Friction Material for reliable grip and control over your workpiece, regardless of its material composition. Its three legs provide multi-directional control to help prevent kickback, keep your stock against the fence, and prevent burning on denser hardwoods. The center leg is adjustable to accommodate multiple sizes and widths of material, and the handle can be oriented at an angle if desired, for more operational control. Another feature of the GRR-Ripper is its built-in balance support, which enables you to square your cut and safely handle the smallest parts of your workpiece while cutting. Make accurate -in. rips safely on your table saw or router table without having to readjust your fence. Do not use a table saw without this essential tool!