US No. 39 Busch Steel Inverted Cone Bur | Busch No. 2 018 – HP | Pack of 6
The inverted cone steel dental bur from Busch & Co. is a precision-engineered cutting instrument designed for demanding applications in Plastics Technology and Model Making. Manufactured in Germany to exacting standards, this cutter delivers consistent, reliable performance across a range of technical tasks.
Product Details
- Shape: Taper (Cone) Inverted
- Material: Steel
- Type: Cutter (HP — Handpiece shank)
- Size: 018 (US No. 39)
- ISO Classification: 310 104 010 001 018
- Pack Size: 6 pieces
Applications
This inverted cone steel dental bur is well suited for precise cutting and shaping tasks. Its geometry makes it particularly effective in applications requiring controlled material removal at defined angles.
The inverted cone steel dental bur is well-suited for the following dental laboratory applications:
| Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances. | |
| Model Making — Trimming and detailing of plaster and stone models. |
Instrument Dimensions
| Head Ø | 1.8 mm (ISO size 018) |
|---|---|
| Shank | HP (Straight Handpiece) — 2.35 mm Ø, 44.5 mm overall length (ISO 104) |
Per ISO 6360, the size number is the maximum head diameter in tenths of a millimeter. See our Busch Bur Size Chart for the full size conversion table, shank codes, and color ring guide.
Why Choose This Bur?
Each inverted cone steel dental bur in this pack of 6 is produced by Busch & Co. GmbH in Germany, a manufacturer with a long-standing reputation for quality in precision rotary instruments. The steel construction offers durability and a sharp cutting edge for repeatable results.

FAQ
What is the ISO classification for this bur? The ISO classification is 310 104 010 001 018.
How many burs are included? This listing includes a pack of 6 inverted cone steel dental bur units.
What shank type does this bur use? This bur uses an HP (Handpiece) shank, compatible with standard straight handpieces.

