Instruction:

For best results, insert the accessory bit all the way into the tool and then back it out slightly before tightening down. This provides plenty of shank for the collect or chuck to hold onto the bit. Keep a light touch, letting the tips of the brush do the work. Too much pressure can break the bristles.
Before using on a material, allow the tool with brush to run at operating speed for at least one minute to discharge any loose bristles. Make sure no one stands in front of or in line with the brush.
The bristle brush can be used with polishing compound.
Do not run in excess of 15,000 rpm. Therefore, do not use with a Single-Speed MultiPro Rotary Tool or a Heavy-Duty Flex-Shaft Tool unless you use a Speed Control.
Always read and follow all safety instructions of your rotary tool and always wear eye protection.

Specifications:

Material: steel
Color: silver
Application: suitable for metal surface polishing, rust etc.
Shank Diameter: Approx 1/8" or 3mm
Shank Length: Approx 2 inch/ 50mm
Wire brush Diameter: Approx 3/16", 9/16" and 1" (5mm / 15mm/ 25mm)

Package include:

15 x 25mm wire wheel brush
15 x 15mm wire wheel brush
15 x 5mm wire wheel brush