Brand  Ex-Pro 

Ex-Pro 1/4'' - 3/8'' Threaded Nuts for Tripod, Light Stands and Digital SLR [5 Pack], high-quality units convert a 1/4" Inch thread screw into a 3/8" threaded screw for larger professional units. 8mm in Height, they provide a universal conversion from standard Tripod 1/4" to the larger 3/8", which heavier professional equipment often uses. What's in the Box?5 x Ex-Pro 1/4'' - 3/8'' Threaded Nuts . 

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