Maedler Rigid Couplings (one piece MAS & two-piece MAT) made up of Steel C45, black oxide finish & Stainless steel 1.4305. It is available with keyway or without keyway. Maedler Torsionally Stiff Couplings are available with types such as HU, HB, HZ with blind holes, HF with blind holes, HZD with through holes, HFD with through holes. Maedler Elastic Couplings are available with different types such as RN, RNG, RNI, RNT with taper bushes, RNK backlash-free, RNH backlash-free, DXA etc. Maedler Curved-Tooth Gear Couplings are available with different types such as BW polyamide 6.6, BOZ polyamide 6.6, BOS II Polyamide/sintered metal, etc.