Black Phosphate Drywall Screw Dia: #6-#14, 3.5-6.3 Length: 9.5- ... 125, 3/8-5" Material: 1022 Surface: z/p, black Black ... ,3.5x38...Finished:black phosphated,grey phosphated,black,white zinc coated,color zinc coated,blue zinc coated...Usage:Drywall screw do much less ... by email or anyway you like,warmly welcome your enquires. Black Phosphate Drywall Screw