Check the listing for details. Light Source Mega-Drop Down 9 inch - Black. Color: Black, Condition: New. Listed at 20.45 USD. Light Source Mega-Drop Down 9 inch - Black The Light Source Mega-Drop Down is a quick and inexpensive way to place a light fixture below the pipe or grid. It now has new wrench flats for easy placement of wrenches for adjustments. The Mega-Drop Down is made from solid 3/4" diameter 6061 T-6 aircraft grade aluminum. The Mega-Drop Down has a 1/2-13 tpi x 2" steel stud to fasten into a Mega-Clamp, or similar clamp that has 1/2"-13 female threads. The lower end of the Mega-Drop Down has 1/2-13 tpi female threads to bolt a light fixture's yoke to the drop down with a 1/2"-13 x 1" grade 5 zinc plated bolt and Belleville washer. When assembling the Drop down to the Mega-Clamp, use Loctite Red or other permanent thread-locking compound to make the connection secure. Working Load Limit: 600 lbs Hardware: 1/2-13 tpi x 2" Steel Stud (to fasten into a Mega-Clamp, not included). 1/2"-13 × 1? grade 5 hex head zinc plated cap screw with Belleville washer Dimensions: 3/4" diameter x 9" longWeight: 0.51 lbs