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Busch Cup Burs

Busch Cup Burs

Vanadium Steel

Vanadium steel cup burs made in Germany by Busch®. 3/32" shanks.

The Basics

  • Cup Burs have cutting flutes on the inside of their cup-shaped heads for rounding wire ends and refining prong tips and rivet heads. Because they tends to clog easily, they should always be used with lubrication.
  • Vanadium Steel burs are economically priced. They cut precisely when new, but don't retain their sharpness as long as other steel alloys. They're used at low speeds.
  • 3/32" dia. shanks are the jeweler's preferred standard for burs and small rotary tools. They fit the adjustable chucks found on most flexshaft handpieces as well as 3/32" handpiece collets.
Item No. Image Outside Dia. Price Qty
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331-077B-009 Cup Bur, Busch 0.9 mm dia. 0.9 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-010 Cup Bur, Busch 1 mm dia. 1.0 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-012 Cup Bur, Busch 1.2 mm dia. 1.2 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-014 Cup Bur, Busch 1.4 mm dia. 1.4 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-015 Cup Bur, Busch 1.5 mm dia. 1.5 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-016 Cup Bur, Busch 1.6 mm dia. 1.6 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-018 Cup Bur, Busch 1.8 mm dia. 1.8 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-021 Cup Bur, Busch 2.1 mm dia. 2.1 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-023 Cup Bur, Busch 2.3 mm dia. 2.3 mm O.D.
$3.16
  • (6 or more) $2.53
  • (36 or more) $2.21
331-077B-025 Cup Bur, Busch 2.5 mm dia. 2.5 mm O.D.
$5.42
  • (6 or more) $4.34
  • (36 or more) $3.79
331-077B-027 Cup Bur, Busch 2.7 mm dia. 2.7 mm O.D.
$5.42
  • (6 or more) $4.34
  • (36 or more) $3.79
331-077B-029 Cup Bur, Busch 2.9 mm dia. 2.9 mm O.D.
$5.42
  • (6 or more) $4.34
  • (36 or more) $3.79
331-077B-031 Cup Bur, Busch 3.1 mm dia. 3.1 mm O.D.
$7.38
  • (6 or more) $5.90
  • (36 or more) $5.16