Robust mixer with three mixing blades for strong mixing performance. Easily rotates into sand or gravel-filled mixtures. Suitable for heavy and viscous materials such as concrete, screed, mortar of all kinds, plaster, epoxy mortar, etc. The three mixing blades grip firmly into the material and pull themselves down to the bottom of the bucket. This allows the mixer to effectively lift heavier material components, such as sand and gravel aggregates, upwards. Mixing action from bottom to top - particularly suitable for heavier, damp materials. The closed protective ring on the mixing basket prevents damage to the mixing bucket and ensures smooth operation of the mixer.