MAPEI Self-Leveling Spike Roller has been designed specifically for cement- and gypsum-based self-leveling underlayments and toppings. The spikes are 2″ (5 cm) in length, making it easy to work with deep pours of material. The shape of the spikes is also designed to cut through the material easily, creating a much smoother, homogenous material. Measuring 20″ (51 cm) in width, MAPEI Self-Leveling Spike Roller enables quick work on large surface areas.