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Busch Fig. 77B Cup Burs .90mm-3.10mm-6 Packs - Otto Frei
Busch Burs

Busch Fig. 77B Cup Burs .90mm-3.10mm-6 Packs

Part # B118.400 6 In Stock Weight <0.1 lb / <5 g
$21.95

Pack Size Options

Sold in packs. See Product Description for quantity.

Bur Size: .90mm
Bur Size: .90mm
Volume pricing
Total qty Discount Per unit You save
1 – $21.95 –
2 – 3 5% off $20.85 $1.10
4 – 11 7% off $20.41 $1.54
12 + 10% off $19.75 $2.20
Add 1 more for 5% off, saves another $1.10 each.

Availability Sold out

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Description

A cup bur sets stones, finishes bearing seats, and cuts clean, uniform cup-shaped recesses in metal. Busch cup burs are among the most trusted tools in professional jewelry making, engineered to ultra-high precision tolerances and favored by bench jewelers worldwide. The Busch Fig. 77B (European Fig. 411) cup bur is available in 13 sizes ranging from 0.90mm to 3.10mm, giving jewelers the precise control needed for consistent, professional results.

Features

  • Classic cup bur profile, ideal for stone setting, seat finishing, and bearing preparation
  • Made from tungsten vanadium steel for durability and long cutting life
  • Manufactured to ultra-high precision tolerances for consistent, repeatable performance
  • Available in 13 sizes from 0.90mm to 3.10mm to cover a wide range of stone sizes
  • Sold in multiples of six, with bulk pack pricing for professional use
  • European Fig. 411 / USA Fig. 77B designation for universal reference

Available Options

Part # Bur Size
B118.400 0.90mm
B118.401 1.00mm
B118.402 1.20mm
B118.403 1.40mm
B118.404 1.50mm
B118.405 1.60mm
B118.406 1.80mm
B118.407 2.10mm
B118.408 2.30mm
B118.409 2.50mm
B118.410 2.70mm
B118.411 2.90mm
B118.412 3.10mm

Notes

All sizes in this range (0.90mm–3.10mm) are sold in multiples of six only. Each selection adds one pack of six burs to your order.

Specifications

Brand
Busch Burs
Part #
B118.400
Type
Burs
Dimensions
1.8 in x 0.75 in x 0.25 in
Bur Style
Cup Bur
Figure Number
Fig. 77B (USA) / Fig. 411 (European)
Material
Tungsten vanadium steel
Head Diameter Range
0.90mm–3.10mm
Tolerance
Ultra-high precision
Sold As
Pack of 6
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

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