Handle material: Zinc Alloy Panek material: Zinc Alloy Lock bolt material: Zinc Alloy Lock plug material: Aluminum clad coppe Centre hole pitch: 50MM Color: Black With pure copper keys Mute, Anti-theft, Rustless Includes complete installation hardware Detailed installation guide   Brief Introduction Wenzhou Jifu Hardware Co., Ltd. was founded in 1999, formerly known as Wenzhou Xiangyang decoration factory(founded in 1985), through social change and corporate restructuring, Jifu’s hard-working and innovative quality is unchanged. The company annual output value of up to 80,000,000 yuan, and growing steadily by 10% per year. At present, the monthly output: 1 million 150 thousand / month, door viewer: 500 thousand / month, handle: 120 thousand / month, there are two production lines, up to 250 thousand units /month, the rest hardware accessories up to 400 thousand / month.