1.5ml Standard Opening Flat Bottom Labbox Export C917, Sand Core Crucible, 10ml-G5, Pore Size: 2-5um, (5pc/ea C914, Sand Core Crucible, 10ml-G2, Pore Size: 40-80um, (5pc/ea) C918, Sand Core Crucible, 30ml-G1, Pore Size: 80-120um, (5pc/ea) 0. out of 5.