The pinnacle streetlamp is made from aisi 316 l stainless steel and has a pyramidal triangular-based shaft and a height of four metres; it has a 60 mm diameter tube by way of an adapter for installing commercial diffusers.the 4-arm pinnacle streetlamp model is made from aisi 316 l stainless steel and has a pyramidal square-based shaft and a total height of 5.16 metres and four arms with a projection of 1.15 metres, fitted to hold four more commercial diffusers.