Surgical Length Burs | FG-LG 21 mm & RA-L 26 mm
Surgical length burs — Busch’s FG-LG (21 mm overall) and RA-L (26 mm overall) shanks, versus the 19 mm and 22.5 mm standards — extend reach for posterior access, deeper preparations, and surgical visibility, keeping the handpiece head clear of the working field.
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This collection holds the RA-L carbide rounds (Busch No. 1S, 1SX, 1SXM), the RA-L surgical round and taper bone cutters (No. 141, 141A, 162, 162A, 166, 166A), and the FG-LG ZIRAMANT zirconia diamonds (No. 6379Z, 6855Z, 6860Z, 8379Z, 8855Z, 8860Z).
These lengths carry the same head geometry as their standard siblings — only the shank code (FG-LG or RA-L) changes, so your technique transfers directly. Need even more reach? See the extra-long 25 & 34 mm collection.
Busch & Co. GmbH
US No. 10S Busch Carbide Round Bur | Busch No. 1S 027 – RA-L | Pack of 2
Regular price $28.99Unit price-
Busch & Co. GmbH
US No. 8S Busch Carbide Round Bur | Busch No. 1S 023 – RA-L | Pack of 2
Regular price $22.99Unit price -
Busch & Co. GmbH
US No. 6S Busch Carbide Round Bur | Busch No. 1S 018 – RA-L | Pack of 2
Regular price $22.99Unit price -
Busch & Co. GmbH
US No. 4S Busch Carbide Round Bur | Busch No. 1S 014 – RA-L | Pack of 2
Regular price $22.99Unit price -
Busch & Co. GmbH
US No. 2S Busch Carbide Round Bur | Busch No. 1S 010 – RA-L | Pack of 2
Regular price $22.99Unit price
Reference pages already linked from this collection, in one place.
Which Surgical Length Bur Do You Need?
Clinical rounds are listed by US number; bone cutters and diamonds by head diameter (the Busch size code is tenths of a millimeter). Every active product in the collection is linked once below.
RA-L (26 mm) — carbide round burs by US number3 items
RA-L (26 mm) — surgical carbide bone cutters6 items
| Busch figure | Pattern | Sizes |
|---|---|---|
| 141 | Carbide Surgical Round | Ø 2.7 mm · Ø 3.1 mm · Ø 3.5 mm · Ø 4 mm · Ø 5 mm |
| 141A | Carbide Surgical Round — low-vibration A cut | Ø 2.3 mm · Ø 2.7 mm · Ø 3.1 mm · Ø 3.5 mm |
| 162 | Carbide Bone Taper (Cone) Pointed | Ø 1.6 mm |
| 162A | Carbide Bone Taper (Cone) Pointed — low-vibration A cut | Ø 1.6 mm |
| 166 | Carbide Bone Taper (Cone) Pointed | Ø 2.1 mm |
| 166A | Carbide Bone Taper (Cone) Pointed — low-vibration A cut | Ø 2.1 mm |
FG-LG (21 mm) — ZIRAMANT zirconia diamonds6 items
| Busch figure | Pattern | Sizes |
|---|---|---|
| 6379Z | Ziramant Football (Egg) — Coarse Grit, Green Ring | Ø 2.3 mm |
| 6855Z | Ziramant Taper (Cone) Round — Coarse Grit, Green Ring | Ø 2.5 mm |
| 6860Z | Ziramant — Coarse Grit, Green Ring | Ø 1.4 mm |
| 8379Z | Ziramant Football (Egg) — Fine Grit, Red Ring | Ø 1.9 mm |
| 8855Z | Ziramant Taper (Cone) Round — Fine Grit, Red Ring | Ø 2.1 mm |
| 8860Z | Ziramant Cylinder Pointed — Fine Grit, Red Ring | Ø 1 mm |
Clinical Use
The RA-L rounds (1S plain, 1SX low-vibration, 1SXM slim-neck) excavate deep caries and open access where a standard 22.5 mm shank leaves the contra-angle head in the way; the 141/141A surgical rounds and 162/162A/166/166A taper pointed cutters are the bone burs for third molar sectioning, osteotomy, and root tip removal at low speed with irrigation; and the FG-LG ZIRAMANT diamonds in coarse (green ring) and fine (red ring) grits cut and adjust zirconia restorations with the turbine head held back from the tooth.
Care and Reconditioning
Long-shank burs are cleaned, disinfected, and sterilized between patients in a bur block; check the extended shank for straightness before each use, and discard any bur that has been bent, chipped, or run against metal. Our Dental Bur Reprocessing & Sterilization Guide covers the full workflow for Busch rotary instruments.
Compare With
Related Busch collections: Extra Long Shank Burs (25 & 34 mm), RA Burs, Oral Surgery Burs, ZIRAMANT Zirconia Diamonds, and Round Burs. For shank codes and figure numbers, see the Bur Comparison Chart, the US Bur Number Finder, and the Dental Bur Glossary.
Reference resources: Bur Comparison Chart · Speed Chart · Glossary
FAQ
What is a surgical length bur?
A bur with an extended shank that reaches deeper sites — third molar sectioning, bone work, deep caries — while the handpiece head stays clear of tissue. This collection covers the 21 mm FG and 26 mm RA lengths.
Do surgical length shanks fit standard handpieces?
Yes — FG-LG seats in standard turbine chucks and RA-L in standard latch contra-angles; only the exposed length differs.
Where are these instruments made?
Every instrument in this collection is manufactured by Busch & Co. in Engelskirchen, Germany — an ISO 13485-certified specialist in rotary precision instruments since 1905 — and ships fast from our US warehouse.
Veterinary dentistry: Surgical length burs are also used for canine and feline extractions. See our Veterinary Dental Instruments page for sizes suited to dogs and cats.
