5 out of 5
UNIBIT USA UB123 Unibit® Step Drill 3 Piece Set, Price/Each
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Product Description
Price is for Each.
Manufacturer Part Number: UB123
Drill Up To 13 Diameters with Just One Drill
Perfectly Round Holes in Thin Material
The CRL Unibit Step Drill Set uses a unique, single flute design to drill perfectly round holes in thin materials. Cutting steps of progressively larger diameters make it possible to drill up to 13 different hole sizes with a single bit. Also, the hole is automatically deburred by the cutting edge of the next size up.
Hole starting is easy because it won't skid across the surface, even without center punching. Designed for use with steel, copper, brass, aluminum and other thin metals, it can also be used on plastics without chipping or clogging.
This set contains three drills which provide a range of holes from 1/8" to 3/4" (3.2 to 19 mm) in two bits, plus 3/16" to 1/2" (4.8 to 12.7 mm) holes in materials up to 3/8" (10 mm) thick on the other bit.
- Brand: Unibit®
- Shank Type: Reduced Round
- Type: Step
Drill Up To 13 Diameters with Just One Drill
Perfectly Round Holes in Thin Material
The CRL Unibit Step Drill Set uses a unique, single flute design to drill perfectly round holes in thin materials. Cutting steps of progressively larger diameters make it possible to drill up to 13 different hole sizes with a single bit. Also, the hole is automatically deburred by the cutting edge of the next size up.
Hole starting is easy because it won't skid across the surface, even without center punching. Designed for use with steel, copper, brass, aluminum and other thin metals, it can also be used on plastics without chipping or clogging.
This set contains three drills which provide a range of holes from 1/8" to 3/4" (3.2 to 19 mm) in two bits, plus 3/16" to 1/2" (4.8 to 12.7 mm) holes in materials up to 3/8" (10 mm) thick on the other bit.
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Return Policy
Return could only be applied within 7 days after delivery.
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Customer Reviews
By Robert D Manning
Date: May 18, 2023
So far theyre working really well!!Thanks
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By Kevin Scott
Date: April 26, 2023
This tool provides many options for hole size. It is especially helpful to increase an existing hole diameter, because it is essentially self-centering.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By chet d.
Date: April 24, 2023
got these bits, drilling 3/16 thick metal and 2 of the larger bits would not go through the metal after 1/2'' point. one of them is burnt on that point. so fair is what i rate these
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]
By TW Parkinson
Date: October 26, 2022
Nice case to keep clean and organized , easy travel for various locations
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Joseph k.
Date: June 14, 2022
Drills easy
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By No name
Date: March 31, 2022
Terrible. Only use them on plastic.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]