The SRP Torch Mounts feature V-lock technology allowing you to mount any cylindrical torch to the arm. The provided o-rings are ideal for 1" (2.54cm) diameter torch bodies. The o-rings can easily be swapped for different size o-rings, allowing you to mount torches from 0.75" to 1.5" in diameter. The Flexible Arms are made of 1/2" diameter Loc-line, are 5.5" long when assembled and include a 1/4"-20 stainless (marine grade) screw interface on each end. This means that if you buy a different torch system at a later date that accepts a 1/4"-20 screw, you can simply remove the V-lock mounts and connect the new torch(es) to the Locline directly.What's in the box:Snake River Prototyping 5.5" Loc-line Arm2x SRP Torch Mounts6x O-Rings for 1" Diameter LightsHardware and Tools for AssemblySnake River Prototyping 1 Year... More