Compatibility - The substitute rolling brush suits for AIRROBO T20 robot vacuum No tools required,easy to install - Just snap into role for quick and easy replacement. Maintenance - We put forward that you just replace the curler brush every single 2-3 months to maintain the excessive performance of for AIRROBO T20. Made of high-strength, environmental nice materials. The equipment are easy to take away dirt, dust and trash in corners and edges effectively. Especially your hairs and your pets hairs. Type:Vacuum Cleaner Accessories Colour:Black Material:Plastic Package Contents: 2 * Roller brush Only the above kit content, varied merchandise shouldn't included. Note: Light mirrored image and varied displays could cause the color of the thing in the picture a piece varied from the real thing. The measurement allowed error is +/- 1-3cm.