Mesee 6mm 6.35mm 8mm Router Bit Collet for CNC Woodworking Router Collet Chuck Replacement - 3 different size router bit chucks can meet various needs in daily work. - made of high-quality high-speed steel, processing by heat treatment and precision grinding, good flexibility and stable performance. - The high-precision milling cutter chuck can be well combined with your engraving machine. Clamp the engraving machine tightly and stably to improve work efficiency. - Widely suitable for engraving machines, wood milling machines, trimming engraving machines, mold manufacturing, milling cutters, wood milling engraving heads and so on. ➤Warm Tips: - Please allow 1-2mm errors due to manual measurement. - Please keep them away from children to avoid choking. - Prevent scraps flying at work, please use safety glasses and gloves. ➤Specification: Material: Carbon Steel Size: 6mm / 8mm / 6.35mm(1/4") ➤Package Included: 3 x Router Collet Chuck Adapter