POPO Essentials Drill brush kit - White Soft, Blue Medium.

Includes either blue or white:  2" Drill brush, 4" Drill brush, Bullet Brush.

White soft: used on upholstery, cloth seats, floormats, leather/vinyl surfaces.

Blue medium: used on carpeting, floormats.

4" Drill brush shaft: 9mm, bullet brush + 2" brush shaft: 7mm

Note: The 4" Flat Drill brush's shaft is thicker, and does not fit impact drill driver with quarter-inch quick change chuck.