Microjig Grr-Ripper Gravity Heel Kit hooks the tail end of your workpiece and automatically retracts mid-board, providing extra leverage to help push through the cut and prevent blowout. Designed for use with table saws, bandsaws, jointers, and router tables, this kit includes five heels, two heel spacers, and mounting hardware. It is adjustable up to 1 inch and fits any existing GRR-RIPPER, making it compatible with all GRR-RIPPER models. Made in the USA, heels are also available to ensure long-lasting performance and safety.