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Carbide Inside Ring Bur 1/2" x 1" With 1/4" Shank

Part # 120.290 Out of Stock Weight -- lb -- g
Current price $34.35
Volume pricing
Total qty Discount Per unit You save
1 $34.35
2 – 3 5% off $32.63 $1.72
4 – 11 7% off $31.95 $2.40
12 + 10% off $30.91 $3.44
Add 1 more for 5% off, saves another $1.72 each.
Cut: Fine

These carbide inside ring burs feature a massive 1/4" shank diameter that prevents the bending commonly associated with skinny-shank cylinder burs. The trade-off is that they require a Jacobs chuck-style handpiece or a collet-style handpiece capable of accommodating 1/4" shanks—but the payoff is a bur that stays true and performs reliably under demanding inside-ring work.

Available in two cuts to suit finishing and detail work at different stages, these burs measure 1/2" x 1" in head dimensions and are made from carbide for lasting durability and cutting performance.

Features

  • 1/4" shank diameter resists bending during use
  • Carbide construction for long-lasting cutting performance
  • Large 1/2" x 1" bur head size suited for inside ring work
  • Available in Fine and X-Fine cuts for versatile finishing applications
  • Compatible with Jacobs chuck-style or collet-style handpieces that accept 1/4" shanks

Specifications

Material Carbide
Bur Head Size 1/2" x 1"
Shank Diameter 1/4"
Bur Type Cylinder / Inside Ring

Available Options

Part # Cut
120.290 Fine
120.291 X-Fine

Notes

These burs require a handpiece with a Jacobs chuck or a collet capable of accepting a 1/4" shank. Standard flex-shaft handpieces with smaller collets will not accommodate this shank size.

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Cancer and Reproductive Harm. www.P65warnings.ca.gov.
Brand
Spearhead
Part #
120.290
Type
Burs
Dimensions
3.25 in x 0.75 in x 0.75 in
Material
Carbide
Bur Head Size
1/2" x 1"
Shank Diameter
1/4"
Bur Type
Cylinder / Inside Ring