Challenge Paper Drill Bit (CHT) 1/8 (3.1mm) Diameter x 2 inch

Drill Bit For Challenge - Diameter: 1/4 Length: 2 - CHT stands for chemicals heat and time. These drill bits are coated in PTFE to prevent buildup and increases the life of the bit. Works great for coated stocks. - CHT: PTFE coated “CHT” bits last longer and run cooler. They cut through tag board recycled papers and heavy coated stocks without gumming up.