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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 Diameter Price Qty
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331-077B-009 Cup Bur, Busch 0.9 mm dia. 0.63 mm (inside) / 0.90 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-010 Cup Bur, Busch 1 mm dia. 0.72 mm (inside) / 1.00 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-012 Cup Bur, Busch 1.2 mm dia. 0.88 mm (inside) / 1.20 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-014 Cup Bur, Busch 1.4 mm dia. 1.05 mm (inside) / 1.40 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-015 Cup Bur, Busch 1.5 mm dia. 1.15 mm (inside) / 1.50 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-016 Cup Bur, Busch 1.6 mm dia. 1.25 mm (inside) / 1.60 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-018 Cup Bur, Busch 1.8 mm dia. 1.40 mm (inside) / 1.80 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-021 Cup Bur, Busch 2.1 mm dia. 1.65 mm (inside) / 2.10 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-023 Cup Bur, Busch 2.3 mm dia. 1.85 mm (inside) / 2.30 mm (outside)
$3.29
  • (6 or more) $2.63
  • (36 or more) $2.30
331-077B-025 Cup Bur, Busch 2.5 mm dia. 2.00 mm (inside) / 2.50 mm (outside)
$5.64
  • (6 or more) $4.51
  • (36 or more) $3.94
331-077B-027 Cup Bur, Busch 2.7 mm dia. 2.20 mm (inside) / 2.70 mm (outside)
$5.64
  • (6 or more) $4.51
  • (36 or more) $3.94
331-077B-029 Cup Bur, Busch 2.9 mm dia. 2.35 mm (inside) / 2.90 mm (outside)
$5.64
  • (6 or more) $4.61
  • (36 or more) $3.94
331-077B-031 Cup Bur, Busch 3.1 mm dia. 2.55 mm (inside) / 3.10 mm (outside)
$7.68
  • (6 or more) $6.14
  • (36 or more) $5.37