Jenis: Internal Tooth, Ukuran Benang / Skru / Lubang: 3/8", Diameter - Di dalam: 0.384" (9.75mm), Diameter - Luar: 0.500" (12.70mm) 1/2", Ketebalan: 0.022" (0.56mm), Penyaduran: Nickel over Copper,
