Optics Ø12 mm clear glass Beam angle 54° Material Stainless steel EN W.nr. 1.4435 Colour Grey Surface treatment Pickled Size Ø25 x 2.5 mm Weight 46 g Mounting Surface mounted with nut Mounting hole Ø16 mm Built-in height 24 mm Min. tail size Ø1 mm Max. tail size Ø6 mm Protection rating IP 68 down to 1 m