Features :

Comes with 3 aluminum tubes. Allow you to reach the areas those hard to reach.
Comes with a cup.
 
Specification :

Material: PP, Aluminum, High density felt cloth
Big brush size:about 20.5cmx19.5cm / 8.07''x7.68''
Aluminum tube size:about 24.5cm/9.65''
Total Length:about 87.5cm/34.45''
 
Package includeds :

1 x Roller Brush
3 x Aluminum Tube
1 x Cup
 
Details pictures :