High quality 316 stainless steel spears. 1 x 2Kw x 240 Vac, 2 x 450 watt x 36 Vdc. Standard 40 mm or 1 1/4 BSP fitting with 51 mm or 2 inch hex flange. Elements spears are 250 mm long. Ideal for corrosive water conditions where standard copper sheathed elements fail early. The two 36 Vdc spears can have up to 3 x 300 watt x 36 Vdc panels wired to them. We have a number of other wattage and voltage elements too, check out our other listings. Also we stock element socket spanners to remove and install elements. Suitable for mains and low pressure tanks.