US No. 7003 Bur – Busch Finishing Round Steel, Made in Germany

The US No. 7003 is the American number for a round finishing bur with a 1.2 mm head (ISO size 012): a round head with many fine blades that smooth rather than cut, for finishing acrylic and removing tool marks. Busch & Co. manufactures it in Germany as Busch No. 41 012 in steel for the straight handpiece. Every US No. 7003 on this page is a genuine Busch instrument and ships from our US warehouse.

Which US No. 7003 Do You Need?

US No.	Busch No.	Material	Cut	Shank	Best for	Pack
7003	41 012	Steel	—	HP	Economical laboratory finishing of acrylics and plaster	6

HP (2.35 mm shank, straight handpiece). See the Busch Bur Size Chart for head and shank dimensions.

Laboratory Uses of the US No. 7003

Acrylic finishing: smoothing denture bases and orthodontic appliances after trimming.
Detail work: at 1.2 mm, reaching small recesses and interproximal areas on models and appliances.
Plaster and stone: cleaning up fine detail on casts.

The No. 7003 sits between the No. 7002 (1.0 mm) and No. 7004 (1.4 mm) in Busch's steel finishing round series.

Speed and Technique

Steel finishing burs work at low speed and light pressure in the straight handpiece; let the blade count produce the surface. Maximum recommended speeds for every Busch shape are in our Dental Bur Speed Chart, and reprocessing steps in the Bur Sterilization Guide.

Made in Germany by Busch & Co.

Busch & Co. has manufactured rotary instruments in Engelskirchen, Germany since 1905. Every instrument on this page is a genuine Busch product, precision-ground on a concentric shank under ISO-certified quality management and guaranteed to arrive free of manufacturing defects under our Busch arrival guarantee.

Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany

FAQ

What is the Busch number for a US 7003 bur? Busch No. 41 012 in steel, HP shank.

What size is a No. 7003 bur? The No. 7003 has a 1.2 mm head diameter (ISO size 012) on a multi-bladed round finishing head.

Is there a carbide 7003? Busch's carbide 41 series starts at 1.4 mm (No. 7004); the 1.2 mm size is made in steel for laboratory use.

Are Busch No. 7003 burs reusable? Yes. Steel burs are cleaned, disinfected and sterilized between uses and replaced when they dull; the Bur Sterilization Guide gives the validated steps.

Related resources: US Bur Number Finder · Bur Comparison Chart · Speed Chart · Bur Glossary · Nearby sizes: US No. 7002, US No. 7004