GRR Ripper 3D Pushblock 1 4 in. Drive Ratchet Efficient Heating: Adjustable temperature range Efficient Heating: Adjustable temperature range from 50°F to 140°F Sturdy and robust: this stand can support long workpieces up to 9 Safely cut wood with more control and precision with the GRR RIPPER 3D Pushblock by MICROJIG made in the USA Provides a powerful hold over the work piece using green GRR RIPPER long lasting rubberized material Controls both the keeper and off cut piece through the cut at the same time Provides 3 directions of force that virtually eliminates kickback and prevents wood burn Protects as a moving blade guard to shield hands from the spinning blade the entire cut Safely work with small stock up to 1 4 in pieces with the built in balance support Precisely cut a variety of sizes using the adjustable center leg 100% Woodworker tested and recommended by handy magazine product testers December 2013 issue Fully adjustable and easy to use on all table saws router tables