Catalog number: SJ-57 Features: ●The curved surface under the neck of the trumpet drill screw fits snugly into the plaster board. ●Suitable for fastening plaster board and steel frame. Specifications: ●Maximum compatible board thickness (mm): 2.3 ●Compatible driver: Phillips No. 2 ●Nominal dimension (mm) L1: 16-49 ●Nominal dimension (mm) H: 4.5 ●Nominal dimension (mm) d x L: 3.8 x 57 ●Nominal dimension (mm) D: 8 Material/Finish: ●Aluminum killed steel (SWCH18A) ●Surface treatment: Unichrome plating finish Caution: ●Cannot be used on hard boards such as ceramic boards and hard wood.
