US No. 558 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 31 012 – Crosscut – HP | Pack of 6

The carbide cylinder flat dental bur from Busch & Co. GmbH is a precision-engineered rotary cutting instrument designed for demanding dental and technical applications. Manufactured to exacting German standards, this cutter delivers consistent, controlled material removal across a wide range of substrates.

Product Details

This instrument is classified as a Carbide Cutter, Cylinder Flat, conforming to the following standard classification: ISO: 500 104 107 007 012. It is supplied in a convenient pack of 6 (product reference: 31 012 / US No. 558), ensuring you always have a ready supply of fresh cutting instruments on hand.

Applications

The carbide cylinder flat 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.
	Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances.
	Model Making — Trimming and detailing of plaster and stone models.
	Model Casting Technique — Finishing and adjustment of cast metal frameworks.

Instrument Dimensions

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?

As a genuine carbide cylinder flat dental bur, this instrument offers superior hardness and edge retention compared to standard steel cutters. The cylinder flat geometry provides flat-bottomed cuts and well-defined margins, making it an ideal choice for technicians who demand accuracy and repeatability in every procedure.

Produced in Germany, each bur in this pack benefits from rigorous quality control and consistent manufacturing tolerances, ensuring reliable performance across all six pieces.

FAQ

What is the ISO classification for this bur? The ISO classification is 500 104 107 007 012.

How many burs are included in one pack? Each pack contains 6 carbide cylinder flat dental burs.

What industries is this bur suitable for? It is suitable for model making, plastics technology, crown and bridge technology, and model casting technique.

Is this product made in Germany? Yes, this instrument is manufactured in Germany by Busch & Co. GmbH.

Compare With

Manufacturer literature: Busch catalogs and product brochures for this line are available in our Busch Burs Catalog Library.