Essential Milling Bit Set Pack:Extended(52-Piece） Seamless Integration: Fully compatible with

Seamless Integration: Fully compatible with Makera Z1 via the expansion port

175 * 25mm x 1

2mm * 8mm  x 2

you must also ensure you select the appropriate size thread milling bit

Designed specifically for PCBs

Essential Milling Bit Set Pack:Extended(52-Piece） Seamless Integration: Fully compatible withVersatile milling bit set for soft metals, wood, plastics, and composites. Ideal for cutting, milling, chamfering, and threading, supporting both fine and rough machining. Choose between the Extended Pack (52 pieces of bits) or Standard Pack (26 pieces of bits). Perfect for diverse DIY and professional projects. Extended Pack(52 Piece) Standard Pack (26 Piece) Spiral 'O' Single Flute Bit for Metal 1 8 Shank 3. 175mm * 12mm x 2 2mm * 8mm x 2 1mm * 3mm