Sutton 25mm x 340mm D644 SDS Max Masonry Drill Bit - Reo Extreme 10 Cut

The Sutton D644 is a 340 mm SDS Max Reo Extreme 10-cut masonry drill bit with a 100% carbide head and a 200 mm flute length. This range has 16 sizes: 14, 16, 18, 20, 22, 24, 25, 26, 28, 30, 32, 36, 38, 40, 42 and 45 mm. It is for drilling reinforced concrete and masonry.

The 100% carbide head has 10 cutters, designed for increased speed and robust performance across hundreds of holes in reinforced concrete. The SDS Max shank suits all SDS Max rotary hammer drills. The sand-blasted finish is an environmentally friendly production method with zero heavy metals.

Where this product is used

• Drilling reinforced concrete and masonry with an SDS Max rotary hammer.
• Applications include trade, professional, plumbing and masonry work.
• Holes up to the 200 mm flute length.

Sizes and item numbers

Every size in the range, with its Sutton item number. Overall length and flute length are in millimetres.

Drilling notes

• Use in an SDS Max rotary hammer drill with the hammer action on (rotation plus percussion).
• Apply steady, moderate pressure and let the hammer do the work; extra force does not speed up the cut.
• Choose a length so the hole depth sits within the flute length. For deeper holes step up to a longer series.
• Withdraw the bit from time to time in deep holes to help clear dust, and clear the dust from the hole before fitting an anchor.
• Match the drill diameter to the hole size the anchor or fixing manufacturer specifies.

Key specifications

Related drilling products

Compare other Sutton SDS Max masonry drill bits: D645 540 mm Reo Extreme, D646 690 mm Reo Extreme, D647 920 mm Reo Extreme, D648 1300 mm Reo Extreme, D649 1500 mm Reo Extreme, D675 340 mm Reo Pro 3-cut, D676 540 mm Reo Pro 3-cut and D640 Speeduster 610 mm with dust extraction. Browse all masonry drill bits and sets. Need help choosing? Our guide to choosing the right drill bit and drill bit selection guide cover drill types and materials.