Shell Color : Red, Yellow, Green, Silver Tone, Gray; Lighting Color : Red, Yellow, Green Net Weight : 520g/pcs Built in Buzzer, Bright LED Light can be used a Signal Light or Alarm Light. It designed for displaying the operation status of machines tools, industrial machines, special purpose machines, automatic production line, robot, etc. Product Name: Industrial Signal Light Material: Alloy, Plastic Rated Voltage: 24V Mounting Hole Diameter : Big:1.3cm / 0.51 inch Small: 0.86cm / 0.33 inch Light Size (.): 5 x 31cm / 1.9 Inch x 12.2 inch (D * L) Bracket Size (.): 7 x 3.2 x 29cm / 2.7 Inch x 1.2 inch x 11.4 inch (L * W *H) Hose Size (.): 0.9 x 30.5cm / 0.35 Inch x 12 inch (D * L) Cable Length: 74cm / 29 Inch Package Content : 4 x Industrial Signal Light; 4 x Bracket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.