3/8"UNC + 1/4" UNC screw kit for Manfrotto Sliding 501PL QR Plate QR Mounting 577, 3/8 and 1/4 screws, 3/8-16 with 1/4-20 screws

3/8"UNC + 1/4" UNC screw kit for Manfrotto Sliding 501PL QR Plate QR Mounting 577, 3/8 and 1/4 screws, 3/8-16 with 1/4-20 screws

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