Description
This set of 12 round smoothing broaches covers a size range of 0.68 mm – 4.5 mm, giving jewelers, watchmakers, and metalsmiths a comprehensive selection for cleaning and finishing holes in metalwork. Made of high-quality steel and uniformly tempered, these broaches are built for consistent performance and long service life.
These are English Pattern Broaches, sized according to the Stubs grading system — a measuring standard originating in England. The Stubs numbers correspond to markings from an English screw plate created by Peter Stubs of Warrington, Lancashire, a renowned maker of watch and clockmaking tools in the early 1800s. This system remains widely used in professional watchmaking and jewelry trades.
Please note: these broaches are sold as a set only and are not available for individual purchase.
Features
- Set of 12 round smoothing broaches in graduated sizes
- Made of high-quality steel, uniformly tempered for extended durability
- English Pattern design using the Stubs sizing grading system
- Suitable for cleaning and finishing holes in jewelry and watch components
- Length varies by size: from 66 mm (2-5/8") for the smallest (Stubs #70) to 150 mm (5-7/8") for the largest (Stubs #15)
- Not available individually — sold as a complete set only
Specifications
| Set Quantity | 12 broaches |
|---|---|
| Size Range | 0.68 mm – 4.5 mm |
| Sizing System | Stubs (English Pattern) |
| Stubs Size Range | #15 (largest) – #70 (smallest) |
| Length Range | 66 mm (2-5/8") – 150 mm (5-7/8") |
| Material | High-quality steel, uniformly tempered |
| Pattern | English Pattern (round smoothing) |
What's Included
- 12 round smoothing broaches, size range 0.68 mm – 4.5 mm (Stubs #70 – #15)
Specifications
- Brand
- Grobet USA
- Part #
- 115.513
- Type
- Broaches & Burnishers
- Dimensions
- 9 in x 2.5 in x 0.5 in
- Set Quantity
- 12 broaches
- Size Range
- 0.68 mm – 4.5 mm
- Sizing System
- Stubs (English Pattern)
- Stubs Size Range
- #15 (largest) – #70 (smallest)
- Length Range
- 66 mm (2-5/8") – 150 mm (5-7/8")
- Material
- High-quality steel, uniformly tempered
- Pattern
- English Pattern (round smoothing)
Cancer and Reproductive Harm. www.P65warnings.ca.gov.
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