Spade drill bit Irwin IRWIN 10502819 30 mm diameter

Irwin IRWIN 10502819 30 mm diameter spade drill bit is a flat paddle-style bit engineered for fast drilling of large-diameter holes in wood and similar soft materials. The central point ensures quick and accurate centring while the wide paddle and cutting spurs help remove chips efficiently, making it suitable for through-holes in carpentry, electrical and plumbing rough work. The 1/4" quick-change shank fits most hand drills and impact drivers equipped with a compatible chuck or adapter.

Advantages

This spade bit features double cutting spurs that scribe the outside edge of the hole to reduce breakout and produce a cleaner exit. A thicker cutting edge increases durability and extends service life when drilling into soft hardwoods and plywood. The BLUE-GROOVE point and cutting edge design improve chip evacuation for faster drilling and reduced clogging. The shank is 10% larger than standard for added durability under torque, and the 1/4" quick-change shank allows fast tool changes and compatibility with quick-change chucks.

Suitable for

• Drilling through-holes in framing timber and soft hardwood
• Creating cable and pipe access holes for electrical and plumbing installations
• General carpentry tasks where large, fast holes are required
• Installing door hardware or running conduit through studs and joists

Key specifications

• Drill bit type: spade (paddle) bit
• Cutting diameter: 30 mm
• Shank type: 1/4" quick-change shank
• Cutting features: double cutting spurs, thicker cutting edge, BLUE-GROOVE point
• Material suitability: wood and similar soft materials (plywood, OSB, soft hardwood)

How to use

Mark the drilling location and secure the workpiece to prevent movement. Fit the spade bit into the drill chuck or quick-change adapter and make sure it is seated firmly. Start drilling at low speed to allow the central point to locate the centre, then increase speed and apply steady pressure to allow the double spurs and cutting edge to cut cleanly. Withdraw the bit periodically if drilling deep holes to clear chips and avoid overheating. When finishing, reduce speed before exiting to minimise breakout.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and hearing protection. For the longest tool life, avoid excessive side pressure and keep the bit cool by withdrawing it to clear chips. Match drill speed to material: moderate to high speed for softwoods and lower speed for denser materials. Use a backing board to further reduce exit splintering when a clean finish is required.