Tripod screw 1,material : stainless steel 2,size : 15*12 3, hex with C-ring 4,suitable for digital camere Tripod screw1,material : stainless steel 2,size : 15*123, hex with C-ring 4,suitable for digital camere and professional cameral or other tools .We are willing to provide with sample for quality and function testing .We are ISO 9001 :2000 Cerfitied firm Tripod screw professional tripod screw ...