Skip to content

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

Part # 120.290 Out of Stock Weight <0.1 lb / <5 g
Current price $34.35
Cut: Fine
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.

Availability Sold out

Restock alerts are coming soon. For now, check back or ask us at [email protected]. We'll email you when it's back in stock. We'll email and text you when it's back in stock. Restock alerts are off for this item. It stays on My List. That didn't save. Try again. That didn't go through. Try again. Check the mobile number and try again. Tick the box to get texts. Save it to a list first. Good news: it's in stock now. Turn off an alert you no longer need, then try again. Couldn't save in this browser. Ask us when it's due back: [email protected]

Description

This bur trues and trims the inside of ring shanks, taking down solder seams and sizing stock in a single pass of the handpiece. Spearhead carbide inside ring burs carry a massive 1/4" shank diameter that prevents the bending common to skinny-shank cylinder burs. The trade-off is that they require a Jacobs chuck-style handpiece or a collet-style handpiece that accepts 1/4" shanks, and 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

Available Options

Part # Cut
120.290 Fine
120.291 X-Fine

Compatibility

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.

Specifications

Brand
Spearhead
Part #
120.290
Type
Burs
Dimensions
3.25 in x 0.75 in x 0.75 in
Material
Carbide
Head Shape
Cylinder, inside ring profile
Head Size
1/2" x 1"
Shank Diameter
1/4"
Handpiece Requirement
Jacobs chuck or collet that accepts 1/4" shanks
Application
Trimming and finishing ring interiors
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

Reviews

No reviews yet. Be the first to share your experience with this product.

Write a review ↓