50 inch/128cm Extension Crossbar Boom Arm, Stainless Steel Holding Grip Arm with 1/4" & 3/8" Interfaces Thread for Heavy Duty C Stand, Light Stand and Other Equipment for Studio Photography is up for auction in Electronics. The current bid is $6.00, 83% below the $35.14 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.