Yeti Tool Ltd > SmartBench | CNC Routers & Accessories > ER16 precision made collet to fit 10mm shank router bits.
High Precision Steel Router Collet Reducer - Richelieu Hardware
High Precision Steel Router Collet Reducer 3/4 Overall Dia x 10mm Inner Dia x 1-1/4 Inch Long: Router Bits, Router Bit Parts & Accessories, High Precision Router Collet Reducers
Mesee 3 Pieces Router Collet Chuck, 6mm 6.35mm 8mm Router Bit Collet Chuck Clamping Adapter for Woodworking CNC Engraving Trimming Carving Machine Tool : Amazon.ca: Tools & Home Improvement