New XKG Knob XKG(50) M8 x 8, AISI 316, Blue NBR 1021944 Height:32.00 mm (1.26")|Knob size:50.00 mm (1.97")|Material:AISI 316|Net weight:193.00 g (0.43 lbs)|Sealing material:Blue NBR|Thread size:M8|Thread standard:Metric C View