Simply buy Clamping mandrel for small cutting disc
Kuenuilr Cutting Wheel Set Compatible with Plastic 36pcs for
3 Inch Cut Off Wheels with 1/4 Stem Mounting Mandrel
uxcell Cut-Off Wheel Screw Mandrels 2.35mm Shank
HSS Circular Saw Blade Rotary Tool 54.8mm Mini Wood Cutting Discs
Ring Stretcher Mandrel - Small
10pcs/set 3mm Diamond Cutting Disc Mandrels Cutting Cut-off Wheel
10pcs Cut-off Wheel Screw Mandrel 2.35/3/3.17mm Shank Cutting Disc
Rotary Tool Accessories Miniature Clamping Connecting Lever - Temu
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3 Inch Cut Off Wheels with 1/4 Stem Mounting Mandrel
Reviews for Dremel 1-1/2 in. Rotary Tool Mandrel for Discs, Wheels