1 x 1/4" 3/8" Light Umbrella Holder to Tripod Screw Adapter. Composition: Three-piece kit (3/8" -1/4" screw, 1/4" -3/8" screw stem, 1/4" -3/8" nut). 1 x 1/4" to 3/8" Screw Adapter. Multi-combination design, can be used for devices with 1/4" or 3/8" screw or thread, used widely.
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