| Model No. | Ball Stud Material | Plate Material | Surface Treatment |
| BKT-31 BLACK COATED | 12L14 OR 12L15 | P-O | Black coated |
Office：No. 6, Ln. 151, Minsheng St., Sanxia Dist., New Taipei City 237, Taiwan (R.O.C.)
Factory 1：No. 6, Aly. 7, Ln. 44, Zhonghua Rd., Sanxia Dist., New Taipei City 237, Taiwan (R.O.C.)
Factory 2：No. 56, Ln. 673, Jianxing Rd., Longtan Dist., Taoyuan City 325, Taiwan (R.O.C.)