1/4 mounted point bob – Cylinder-shaped polishing or deburring tool with 1/4″ shank, suitable for rotary tools and precision finishing.
The 1/4 mounted point bob is a versatile rotary accessory designed for polishing, blending, and deburring in tight spaces. Available in cylinder (bob) shape, it’s ideal for metalwork, jewelry, mold making, automotive trim, and other crafts. Mount it on any rotary tool with a 1/4″ chuck and use with abrasive compounds to achieve a crisp, smooth finish.
Cylinder shape (bob) suits flat surfaces and internal cavities
1/4″ shank fits standard drills, die grinders, flex shafts, and Dremels
Material options include wool or felt (for gentle polishing) and aluminum-oxide abrasive points (for more aggressive deburring)
Precise finish with consistent shape and balance ensures uniform results
| Feature | Specification | 
|---|---|
| Shape | Cylinder / Bob | 
| Shank diameter | 1/4 inch | 
| Bob diameter | 1/4 inch (6 mm) typical | 
| Bob length | 1/4 – 1/2 inch (6 – 13 mm) depending on variant | 
| Material | Wool/felt or aluminum-oxide abrasive | 
| Max RPM | 60 000 RPM (abrasive type) | 
| Use cases | Polishing metal, deburring, precision finishing | 
Wool/felt bobs are used with polishing compounds for mirror finishes
Aluminum-oxide abrasive points provide efficient material removal and smoothing on ferrous surfaces
Jewelry and mold finishing
Deburring internal holes and slots
Metal surface blending and polishing
DIY projects requiring fine surface work
Use at maximum RPM specified (≤ 60 000 RPM) and avoid excess pressure
Maintain ≤ 1/2″ distance from tool nozzle per safety guidelines
Wear eye and respiratory protection when working with powders and debris
| Weight | 0.01 kg | 
|---|---|
| Dimensions | 0.25 × 0.5 × 0.25 cm | 

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