



DSPIAE CT Spherical Bits (2-5mm)
Perfect Every Hole & Curve with Precision Spherical Bits
Clean, smooth details make or break a scale model build—and the DSPIAE Spherical Bits (CT20/CT30/CT40/CT50) are designed to help you achieve flawless inner corners, deburred holes, and smooth rounded edges with ease. These premium tungsten steel bits are made to fit most standard clamp handles, and they’re fully optimized for use with the DSPIAE AT-SHD hand drill, making them an essential addition to every hobbyist’s toolkit.
Why These Spherical Bits Are a Must-Have for Modelers
Four Precision Sizes for Every Detailing Need
Choose the perfect size for your project, from ultra-fine touch-ups to larger surface smoothing:
- CT20 (2.0mm): Ideal for tiny crevices, small hole deburring, and ultra-fine cavity detailing.
- CT30 (3.0mm): Perfect for general-purpose inner corner chamfering and cleaning up standard model kit holes.
- CT40 (4.0mm): Great for medium-scale shaping, rounding larger openings, and smoothing resin print imperfections.
- CT50 (5.0mm): Best for bulk material removal, rounding edges on larger parts, and finishing shallow cavities.
The smooth spherical profile lets you create seamless, rounded edges without harsh, flat marks—perfect for cleaning up mold lines, modifying holes, or adding realistic details to gun barrels, nozzles, and rivets.
Fully Compatible with Your Favorite Tools
These spherical bits feature a standard 3mm shank that works with most hobby clamp handles, and they are optimized for use with the DSPIAE AT-SHD hand drill, ensuring a tight, slip-free fit for maximum control during use. No special adapters required—just insert the bit into your tool and get to work.
Built for Durability & Clean, Smooth Cuts
- Made from forged tungsten steel, these bits offer exceptional sharpness and wear resistance, even with repeated use on ABS, PS, resin, and epoxy putty.
- The precision-ground spherical head cuts smoothly through plastic and resin, reducing the risk of chipping or cracking delicate parts.
- Designed for long-lasting performance, so you can tackle multiple projects without needing frequent replacements.
Versatile for Every Stage of Your Build
These bits are perfect for a wide range of modeling tasks:
- Deburring and chamfering drilled holes for a clean, professional finish
- Smoothing inner corners and shallow cavities
- Rounding edges on plastic rods, pipes, and model parts
- Cleaning up mold lines and flash
- Adding realistic dimensional details to rivets, gun barrels, and nozzles
What’s Included
Choose from individual sizes to match your needs:
- 1 × DSPIAE Spherical Bit (CT20 / CT30 / CT40 / CT50)
- Standard 3mm shank compatible with most clamp handles and the DSPIAE AT-SHD hand drill
Important Usage Tips
- Always use light pressure and controlled speed to avoid overheating the bit or damaging your workpiece.
- Not intended for use on hard metals, glass, or ceramics, as this can dull the cutting edges.
- Clean bits after use with a soft brush to remove plastic/resin residue.
- Keep out of reach of children under 14, as the sharp bits can cause injury if mishandled.

DSPIAE CT Spherical Bits (2-5mm)
Sale price$3.50 USD