Description
Overview:
The Milwaukee Step Drill/Thunderweb Combo Set (OEM No. 48899350) is a genuine Milwaukee part designed for clean, accurate hole-making in metal. Made from custom-engineered steel with a durable black oxide finish, it combines two step drill bits with a range of Thunderweb metal twist drills. The step drills cover popular hole sizes for sheet metals, profiles and thin-walled pipes, while the Thunderweb bits handle pilot and clearance holes. Laser-engraved markings and a Rapid Strike tip help with fast starts and precise sizing, reducing the need for pre-drilling and minimising burrs and deformation. A 3-flat shank prevents chuck slip in corded and cordless drill drivers. Ideal for electrical and plumbing work, it suits materials such as copper, brass, aluminium and thin steel.
Key Features:
- Genuine Milwaukee part for assured compatibility and quality
- Two step drill bits: 4-12 mm (1/4 in-1/2 in [6.35-12.7 mm]) and 4-20 mm (1/4 in-3/4 in [6.35-19.05 mm])
- Thunderweb metal drill bits: 2 x 2 mm, 2 x 3 mm, 2 x 4 mm, 1 x 5 mm, 1 x 6 mm
- Rapid Strike tip for improved centring and faster drilling with fewer walking starts
- Special tip and step geometry for jam-free performance and smoother transitions between sizes
- Optimised 2-flute ground cutting edges for cleaner holes and better chip evacuation
- Black oxide coating for wear resistance and up to 4x longer life compared with uncoated bits
- Laser-engraved size markings stay visible for accurate step selection over time
- 3-flat secure-grip shank helps prevent spinning in standard 3-jaw chucks
- Suitable for ferrous and non-ferrous sheet metals, profiles and thin-walled pipes
Typical Applications:
Drilling and enlarging holes in electrical panels, trunking, cabinets and switchgear; creating access holes for pipework and fittings in plumbing and HVAC installations; clean hole-making in copper, brass, aluminium and thin mild steel; general fabrication, maintenance and on-site repairs where fast, accurate sizing and minimal burrs are required.
Also known as:
Step cone cutter set, cone drill bit set, progressive step drill kit, metal drill bit assortment, Thunderweb twist drill set, sheet-metal step bit set, unibit-style step drill (generic term), Milwaukee drill combo kit.
Product Specifications
| L&S Part No. | MIL48899350 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Milwaukee |
| OEM No. | 48899350 |
| Unit of Sale | 1 |
| Machine Type | Drills |
| Fits Brands | Milwaukee |
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