Busch Fig 411T Twincut Concave Cup Bur Kit of 12-0.80mm to 2.00mm

Busch Fig. 411T Twincut Concave Cup Burs represent the gold standard in jeweler's burs — precision-engineered in Germany from tungsten vanadium steel to ultra-high tolerances. This kit of 12 brings together one each of the full size range of 411T Twincut Concave Cup burs, from 0.80mm to 2.00mm, making it the ideal starting point or professional refresh for any bench jeweler who works with prong settings.

The Twincut blade geometry is the defining feature of the 411T series, delivering smooth, controlled cutting action. The Concave cup shape — the traditional form jewelers have relied on for generations — rounds the tip of a prong cleanly and consistently, producing a finished look that protects stones and complements fine craftsmanship. This is the number-one application for cup burs in jewelry work.

Note: Busch also offers a Concave Cone shape in their Fig. 411C and Fig. 411CT cup burs for jewelers who require that alternative profile.

Features

• Twincut blade geometry for smooth, efficient cutting
• Concave cup shape rounds prong tips to a traditional, polished finish
• Made from tungsten vanadium steel
• Manufactured in Germany to ultra-high precision tolerances
• Kit spans a full range from 0.80mm to 2.00mm — 12 burs total
• Primary use: finishing the tips of prongs in prong-set jewelry

Specifications

What's Included

Kit contains one each of the following Busch Fig. 411T Twincut Concave Cup burs:

• B118.450 — 0.80mm
• B118.451 — 0.90mm
• B118.452 — 1.00mm
• B118.453 — 1.10mm
• B118.454 — 1.20mm
• B118.455 — 1.30mm
• B118.456 — 1.40mm
• B118.457 — 1.50mm
• B118.458 — 1.60mm
• B118.459 — 1.70mm
• B118.460 — 1.80mm
• B118.462 — 2.00mm

Notes

Kit contents are subject to availability. The 1.90mm size is not included in this kit. Individual sizes may also be purchased separately.

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.