About welcharm sliding door lock advantages: 1, good quality, more than 20 years experienced in sliding door lock series manufacturing. 2, economical and easy for installing. 3, reasonable price(factory direct price). Name Sliding door lock Model Hcw-l019 Material Aluminum alloy Color Golden Size 200*25 mm Range of application 35-45 mm Application Applicable to various sliding door and window Payment method: 30% as the deposit by t/t, after finish all the products, 70% as the balance by t/t or b/l. Other payments such as l/c, western union etc are accepted.