Milling bits collar is used for Carvera's auto tool changer system. The machine will come with 30 free 1/8-inch (3.175mm) ones. You can buy 4mm/6mm/6.35mm ones for different shaft milling bits.
High-precision spindle collet used in the Carvera. The machine will come with a 1/8 inch (3.175mm) collet by default, which is for using 1/8 inch milling bits (the most suitable one). But...