New XK3W Knob XK3W(50) M12, AISI 316, Blue NBR 1020729 Height:32.00 mm (1.26")|Knob size:50.00 mm (1.97")|Material:AISI 316|Net weight:113.00 g (0.25 lbs)|Sealing material:Blue NBR|Thread size:M12|Thread standard:Metric C View