Busch Fig 411T Twincut Concave Cup Bur Kit of 13-0.80mm to 2.00mm

Cutting a clean concave seat for a stone starts with a cup bur in exactly the right size. The Busch Fig 411T Twincut Concave Cup Bur is a 3-in-1 design that pairs concave cup geometry with twincut fluting for stone setting, seat preparation, and detail work, and this kit gathers the full size progression in one purchase.

Busch machines these burs from tungsten vanadium steel to ultra-high precision tolerances, so the geometry stays consistent from the smallest size to the largest. The kit holds one each of all 13 sizes from 0.80 mm to 2.00 mm in 0.10 mm increments, organized in a plastic bur box with 48 holes sized for 3/32" shank burs.

Features

• Busch Fig 411T Twincut Concave Cup profile, a 3-in-1 design for versatile cutting tasks
• Twincut fluting for smooth, efficient material removal
• Manufactured from tungsten vanadium steel to ultra-high precision tolerances
• Complete size range from 0.80 mm to 2.00 mm in 0.10 mm increments
• 13 burs included, organized in a plastic bur box
• Consistent geometry across all sizes for predictable, repeatable results