1.material:steel,aluminium,wood 2.size:6",8",10",12",14",16",18",24",30",36",40:,48" 3.packing:1 pc per polybag,then to carton american type F-clamp codesizecodesizecodesize18-5016"18-50514"18-50930"18-5028"18-50616"18-51036"18-50310"18-50718"18-51140"18-50412"18-50824"18-51248" heavy Type F Clamp