by Manfrotto
(10)Buy new: $11.49
6 used & new from $10.00
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Adapter 1/4- Inch- 20 To 3/8- Inch With Flange. Attachment: 1/4- Inch female thread; attachment 2: 3/8'' screw; black color; diameter: 1.18 in; material: nickel steel; weight: 0.11 lbs.