Simply buy Clamping mandrel for small cutting disc
OEMTOOLS Drill Mandrel Adaptor with Cut Off Wheel 5 Piece
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RYOBI Rotary Tool 5/16 in. Cylinder Engraving Burr (For Metal
Rotary Tool Accessories Miniature Clamping Connecting Lever - Temu
uxcell Cut-Off Wheel Screw Mandrels 2.35mm Shank
Dremel MANDREL 402
Cutting Discs Set for Rotary Tool Accessories 106PCS, HSS Circular
Cutting Discs Set for Rotary Tool Accessories 106PCS, HSS Circular
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26PCS Cut-off Wheel Screw Mandrel Set, 2mm/3mm/6mm Screw
10pcs/set 3mm Diamond Cutting Disc Mandrels Cutting Cut-off Wheel