Grohe nodular cast iron. Mobile antiglissant braking system on the head. Bar made from high tensile steel (Zinc) calibrated and gear. Special profile in “8. Handle of the wheel. Model No 21-hrence: ur-2011015Clamp screw: Screw Clamp 15 cm, 18 x 7 mm Projection of 60 mm with a cross – 2011015 – UrkoType: