how deep can this bit drill into concrete

You can drill to a depth of 6-inches.

What does the acronym SDS stand for?

SDS stands for "Slotted Drive System".

Are these compatible? dewalt d25263k d-handle sds rotary hammer with shocks, 1-1/8"

Yes, this is compatible with model D25263K

Will using running water to flush the hole add to the life of the drill and improving drilling speed, or will water be bad?

In 30 years I've never heard of using water and I've put these bits to the test drilling 20+ holes in a hour or less. You're chipping "rock", not cutting metal. Imo water would just gum up the bit, the hole, and makes mess!

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⛏️ Drill smarter, last longer — the pro’s choice for concrete conquest!

BUILT TO WITHSTAND - Increased steel thickness prevents breakage under heavy use
CONCRETE CONFIDENCE - Drills clean holes up to 1-1/8" diameter in poured concrete and masonry with ease
UNMATCHED DURABILITY - Rock carbide tip extends bit life beyond the competition
SPEED MEETS PRECISION - Elongated four-flute helix design accelerates drilling in concrete and masonry
VERSATILE COMPATIBILITY - Optimized for both electric and cordless rotary hammers for on-the-go professionals

The DEWALT DW5447 is a 5/8-Inch x 10-Inch x 12-Inch SDS Plus hammer bit featuring a rock carbide tip for extended durability, an elongated four-flute helix for faster material removal, and reinforced steel to prevent breakage. Designed for use with electric or cordless rotary hammers, it efficiently drills holes up to 1-1/8" diameter in concrete and masonry, making it an essential tool for professionals demanding speed and reliability.

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Manufacturer	DEWALT
Part number	DW5447
Item Weight	222 g
Product Dimensions	38.74 x 4.75 x 1.27 cm; 222.26 g
Item model number	DW5447
Size	Pack of 1
Color	Silver
Style	5/8 x 10 x 12
Finish	Silver
Material	Carbide
Item Package Quantity	1
Number Of Pieces	1
Measurement System	Metric
Included components	5/8 X 10 X 12 SDS
Batteries Included?	No
Batteries Required?	No

DEWALT DW5447 5/8-Inch x 10-Inch x 12-Inch ROCK CARBIDE SDS

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