Dremel 9902 Tungsten Carbide Cylinder Abrasive Bur 1/8 Inch

Product Description

The DREMEL 9902 is a tungsten carbide cylinder abrasive bur designed for use with rotary tools. It features a double-cut tooth pattern that removes material aggressively while still allowing reasonable control over the cut. The 1/8-inch shank fits standard rotary tool collets, and the cylinder head profile suits carving, shaping, and deburring work across a wide range of materials. Rated to 35,000 RPM, it handles high-speed passes without deflection. Installers, fabricators, and tradespeople reach for this bur when working on metal, hardened steel, cast iron, fire ceramic, plastic, or hard woods.

This bur is suited for tasks where a flat-ended cylindrical cutting profile is needed — shaping internal cavities, enlarging holes, smoothing weld beads, or carving grooves. It performs in both bench-work and in-place service scenarios, making it useful for HVAC techs, plumbers, and electricians trimming materials during rough-in or finishing work. The uncoated tungsten carbide head delivers consistent cutting performance without surface treatment that could flake or separate under load.

Key Features

• Tungsten carbide cylinder head for high-durability material removal
• Double-cut tooth pattern for aggressive yet controllable cutting
• 1/8-inch shank diameter fits standard rotary tool collets
• Rated to 35,000 RPM maximum for high-speed rotary tool use
• Compatible with metal, hardened steel, cast iron, fire ceramic, plastic, and hard woods
• Uncoated head — no coating separation risk during extended use

Compatibility

Designed for use with rotary tools accepting a 1/8-inch collet. Compatible material applications include metal, hardened steel, cast iron, fire ceramic, plastic, and hard woods as specified by the manufacturer.

Installation Notes

Install this bur into a rotary tool collet rated for 1/8-inch shanks and verify the collet nut is fully tightened before operation. Always wear eye protection when operating at high RPM, as carbide cutting generates fine chips and debris. Do not exceed the 35,000 RPM maximum rating. Disconnect or power down the rotary tool before changing burs.