N1210 : Outside Diameter - 19mm, Size Wrench - 17mm, with M12x1.0mm, thickness is 3mm. Fitting as follow

1. Holder : H2-12-05~30, H20-12, H89-12, H20-12W, H89-12W, H3-12-40, H3-12-50, H4-20-30, H4-20-40

2. Holder Bracket : RGA-1025, RGA-1075, RGA-1225, RGA-1275, GA-1050, GA-10100, GA-1250, GA-12100