specifications: 360 Mini Prism with 4 poles for the total station Pole Material: Aluminum alloy Mast diameter: 12mm For robotic total station ATR: 350M specifications: 360 Mini Prism with 4 poles for the total station Pole Material: Aluminum alloy Mast diameter: 12mm For robotic total station Package delivery: 1X 360 Mini prism + bag + 4Xpoles+1/4 adapter + adapter (See image) ATR: 350M