Dremel Precision Drill Bits and Compatible Burr Sets Compared

Best for
Modders drilling plastic controller shells and cases

The Dremel 628HP 7 Piece Titanium-Coated Rotary Drill Bit Set is the only genuine Dremel product here, and for most modding work it is the one to start with. It includes seven bits in 1/32, 3/64, 1/16, 5/64, 3/32, 7/64 and 1/8 inch diameters, covering everything from pilot holes for tiny screws to LED holes in a controller shell or case panel.

The bits are stainless steel with a titanium coating, and Dremel lists them for wood, plastics, soft metals and drywall. Every bit shares a 1/8 inch shank, so according to the listing it works with all Dremel rotary tools without an extra collet or chuck. That uniform shank is a real convenience: you swap bits without changing collets mid-project.

What it is not for is glass, stone or hardened steel; the listing does not claim those materials. With only seven bits, you may also want spares of the smallest sizes, which are the easiest to snap. For general household drilling beyond rotary tool work, a full-size drill set is the better fit.

• Seven sizes from 1/32 to 1/8 inch
• Titanium-coated stainless steel
• 1/8 inch shank for all Dremel rotary tools
• Wood, plastics, soft metals and drywall

Best for
Drilling glass, stone and shells for jewelry

The Sworker Diamond Drill Bits 1mm 1.5mm set is a third-party kit made by Sworker, not Dremel. It includes 20 diamond-coated twist drill bits, five each in 1mm, 1.5mm, 2mm and 2.5mm, plus four brass collets sized to match, four bags and a clamshell case. The 120-grit diamond coating is aimed at hard, brittle materials: sea glass, shells, agate, quartz, amethyst, porcelain, ceramic and gemstones.

For modders, that opens up projects that ordinary twist bits cannot handle, such as drilling a glass panel accent, a stone display base for a figure, or a ceramic piece. The listing is clear that thick glass and stone need water cooling, either submerged or under running water, to prevent overheating and cracking, while thin shells may not. Because the bits have small shanks, the included collets are essential for a secure fit. Sworker lists a 5-year returnless replacement warranty.

• 20 diamond bits in four sizes
• Four matching brass collets
• 120-grit diamond coating

Best for
Holding odd-size shanks in a rotary tool

The Drill Chuck Collet Set for Dremel is a 15-piece third-party kit from FOTYBEI. It is sold as a replacement for the 4486 keyless chuck and 4485 brass collets used on Dremel rotary tools. The keyless chuck holds accessories with shanks from 1/32 to 1/8 inch, with a built-in spring meant to keep bits from slipping or flying out, and the brass collets cover 0.8mm to 3.2mm shanks.

This is not a drill bit set but it is often what makes one usable. If you buy bits with non-standard shanks, or lose the collet that came with your tool, a chuck lets you switch quickly between small bits. The listing highlights an all-metal nut rather than plastic, lists a 1/4-20 UNC thread size, and asks buyers to measure and compare sizes before purchasing. Keyless chucks are handy but generally less precise than a correctly sized collet, so for the finest work, use the brass collet that matches your shank.

Best for
Shaping plastic and aluminum case parts

The Tungsten Carbide Rotary Burr set is a 10-piece FOTYBEI kit with 1/8 inch shanks, total lengths of 45 to 50mm, and a double cut pattern. Double cut burrs have crossed grooves that produce smaller chips and a smoother finish, and the listing says this design suits lower-density materials such as wood, plastic and aluminum. That makes it well matched to shaping case cutouts, smoothing controller shell edges or carving wood.

The listing claims a hardness of HRC70 and says the set fits Dremel tools and most rotary tools or die grinders. There is a small inconsistency in sizing: the features give a 1/4 inch cutting diameter, while the specifications list 6.45mm. It comes in a small storage case.

Best for
Compact carving kit for mixed materials

The Sworker 10 Pcs Carbide Burr set is a compact third-party kit with a 6mm cutting diameter, a case measuring 3.88 by 2.66 by 0.47 inches, and a 5-year returnless replacement warranty. The title lists metal, wood, stone and steel for grinding, carving, cutting and polishing.

Its listing is thin, and it contains a shank-size conflict you should notice. It describes a 3mm cylindrical shank while also calling it compatible with 1/8 inch, or 3.175mm, shank bits. A 3mm shank is slightly smaller than 1/8 inch, and in a 1/8 inch collet that difference can mean a looser grip, so a 3mm collet or a keyless chuck may be the safer way to hold it. The listing says it is compatible with the Dremel flex shaft. It suits modders who want a small carving kit and are willing to check the fit.

Best for
Modders wanting the most burr shapes

The 20 Pcs Carbide Burr Bits 1/8 inch shank set, also from Sworker, doubles the count to 20 double cut tungsten carbide burrs in a range of shapes. Here the shank is listed as 3.175mm, which matches a standard 1/8 inch collet. The burrs have a 6mm cutting diameter, an uncoated finish and a 15-degree cutting angle.

The listing says they are optimal in a high-speed rotary tool and not optimal in a 3-jaw drill chuck, and recommends larger burrs and a 500W or more tool for heavy material removal. It describes use on hard metal, steel, aluminum, stone, wood and plastic, and its claim that the burrs are more aggressive than diamond bits refers to removing material faster, not to drilling glass. Sworker lists a 6-year returnless replacement. If you want broader tools for a workbench, our home tool set guide covers the basics.