The Festool 769031 Mixer Spiral Stirrer HS 2 140x600 M14 has a dual-spiral helical design paddle for mixing viscous materials like tile cement, filling compounds, flooring mixtures, ready-mix plasters, screed, smoothing cement, and filling mixtures. Works with ErgoFix Adapter for tool-less mounting to the MX 1200 Mixer, and has an M14 mount.