Is 1/4" tube as od (outside diameter)?

Yes, ¼" is the outside diameter.

Are the rollers smooth? Would soft metal, like brass, be marked by rollers?

Hi, thanks for your inquiry. The roller surface is knurled as the picture showing. Probably there will be pressing mark in soft metal.

Can you set it for a specific diameter and just roll it or is it just trial and error

The diameter of the bend you make is going to depend on the length of your stock. There is no diameter setting. Make your bends in quarter turn increments, roll and repeat. This machine is mainly for rings. If you’re trying to make decorative bends that can be achieved but not exactly what it’s for. Hope that helps.

Can it roll 1 inch copper tubing

I don't believe so, there is not a groove to ride in for 1" material, may flatten it

Manual Ring Roller 1 4 In Round Steel Kaka Industrial

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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165639 Ft

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Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Shape your metalwork dreams with hands-on precision!

COMPACT POWERHOUSE - Lightweight 13 lb design fits perfectly on any workbench.
CUSTOMIZABLE RING SIZES - Adjust the top roll to create rings starting at 3 in diameter and beyond.
PRECISION METAL SHAPING - Roll round steel bars up to 1/4 in with unmatched control.
VERSATILE FLAT BAR SUPPORT - Effortlessly bend flat steel up to 1 x 1/8 in for diverse projects.
MANUAL CONTROL MAXIMUM CRAFTSMANSHIP - Three-roll hand crank ensures smooth, precise bends every time.

The KAKA INDUSTRIAL PR-3 Manual Ring Roller is a compact, hand-powered tool designed for fabricators and hobbyists to form round steel bars up to 1/4 inch and flat steel up to 1 x 1/8 inch. Featuring a three-roll hand crank system and adjustable top roll, it enables precise ring formation starting at 3 inches diameter, ideal for decorative ironwork and repair tasks. Weighing just 13 pounds, it fits seamlessly on any bench, combining portability with professional-grade performance.

Specifications

ASIN	B015KDO5S4
Best Sellers Rank	#390,774 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #499 in Rebar Cutters & Benders
Color	Grey
Customer Reviews	4.4 4.4 out of 5 stars (220)
Date First Available	September 19, 2015
Included Components	body
Item Package Quantity	1
Item Weight	13.67 pounds
Item model number	PR-3
Manufacturer	KAKA INDUSTRIAL LLC
Part Number	PR-3 Manual Ring Roller
Power Source	hand_powered
Product Dimensions	14.17 x 7.87 x 8.27 inches
Style	PR-3

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