Busch Carbide Flame Cutter | Busch No. 425FFX 040 – Extra Fine Crosscut – HP | Pack of 1
The carbide flame cutter double cut dental bur from Busch & Co. GmbH is a precision-engineered rotary instrument designed for demanding dental laboratory and clinical applications. Classified under ISO standard 500 104 274 110 040, this cutter delivers reliable, controlled material removal in a wide range of procedures.
Product Overview
This instrument features a flame-shaped carbide head with a super fine double cut pattern, making it an ideal carbide flame cutter double cut dental bur for achieving smooth, refined surfaces with minimal chatter. The double cut configuration removes material efficiently while producing a finer finish compared to single cut alternatives.
Key Features
- Type: Carbide Cutter, Flame Shape
- Cut Style: Super Fine Double Cut
- ISO Classification: 500 104 274 110 040
- Shank: HP (Handpiece)
- Pack Quantity: 1
Instrument Dimensions
| Head Ø | 4.0 mm (ISO size 040) |
|---|---|
| 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.
Applications
As a high-performance carbide flame cutter double cut dental bur, this instrument is particularly well-suited for Crown and Bridge Technology, where precision shaping and contouring of restorative materials are critical.
The carbide flame cutter double cut dental bur is well-suited for the following dental laboratory applications:
| Crown and Bridge Technology — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory. |
German Engineering
Manufactured to exacting standards, this carbide flame cutter double cut dental bur reflects the quality and consistency that Busch & Co. GmbH is known for worldwide.

FAQ
What is the ISO classification for this bur? This instrument is classified under ISO 500 104 274 110 040.
What cut type does this instrument feature? It features a super fine double cut pattern on a flame-shaped carbide head.
What shank type is compatible with this cutter? This cutter is designed for use with an HP (handpiece) shank.

