RigWheels Universal Rail Brackets with 13" Cross Bars Sensei SUR-5282 they are placed at each

they are placed at each end of the pre cut lumber

/1000 ft Marking Type: Surface printing in white ink

Active or Passive Active Frequency Response 20Hz - 50kHz Amplifier 2 x 50W RMS @ 8 Ohms

Fluorine Coating on Front Element

RigWheels Universal Rail Brackets with 13" Cross Bars Sensei SUR-5282 they are placed at eachFor Suspended Rail Sliders & Dollies Two 13" Cross Bars with Rail Brackets Supports 1 to 2" Pipe Sizes Works with Square Rail up to 1. 75" 5 to 11" Rail Bracket Width 3 8" 16 Center and End Mounting Threads Baby Junior Stand Adapters Included Compatible with MicroWheel Carriages Accommodating various track widths and pipe sizes, the Universal Rail Brackets with 13" Cross Bars from RigWheels can be used with a wide range of suspended rail type sliders