Is the chuck 1/2" or 3/8"?

It's not 1/2 !!!!! Ugh. It's enormous...this doesn't fit the 1/2 inch hammer drill I bought. Don't listen to the other person ....grrrrrrrrer

I have a dewalt 1 1/8" sds drill will this bit fit? also i need to drill 1 1/4 " hole × 36" into a pilon for a pvc pipe for wire. will this work?

no the length is not long enough,it only has 31" of drill ,36" total length

Is this bit really 1 1/4” in diameter? I need it to be precise for pool fence I putting up.

Hi ! This HC5071 Drill Bit has a diameter of 1-1/4". For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

what is the difference between the sds max and sds plus?

Plus is like a 3/8 shaft and a max is 5/8 or 3/4 bigger and stronger

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Specifications

Material	Carbide
Cutting Diameter	1.5 Inches
Finish Type	Uncoated
Shank Type	SDS-Max
Brand	BOSCH
Tool Flute Type	Spiral
Surface Recommendation	Alloy Steel
UPC	000346208528
Unit Count	1.0 Count
Global Trade Identification Number	00000346000016, 00000346208528
Manufacturer	Bosch
Part Number	HC5091
Item Weight	4.44 pounds
Country of Origin	Germany
Item model number	HC5091
Is Discontinued By Manufacturer	No
Size	1-1/2" Diameter
Style	21" Length
Finish	Uncoated
Item Package Quantity	1
Measurement System	Inch
Included Components	1-1/2 In. x 21 In. SDS-max® SpeedX™ Rotary Hammer Bit
Batteries Included?	No
Batteries Required?	No
Warranty Description	1 Year
Assembled Diameter	1.5 Inches
National Stock Number	5133-01-625-2267

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