Roller Brush - 9"KiwiGrip rollers let you vary the texture of KiwiGrip non skid coating from fine to aggressive depending on the amount of surface traction desired.Use the roller to achieve the texture you desire. For aggressive non-skid allow coating to dry slightly then lightly roll again.9" Roller Brush works well on larger boats. Quick Guide (pdf)Owner&';s Manual (pdf)Brochure (pdf)