Stainless Steel Test Tube Frame  Material: S.S. 304 Thickness: 0.5mm Standard size: 14mm*30holescarton dimension: 40*37*37cmqty: 50pcs  14mm*40 holescarton dimension: 45*40*37cmqty: 50pcs 14mm*60 holescarton dimension: 50*42*37cmqty: 40pcs 18mm*30 holescarton dimension: 50*44*42cmqty: 50pcs 18mm*40 holescarton dimension: 50*44*43cmqty: 40pcs 18mm*60 holescarton dimension: 62*48*43cmqty: 40pcs Weight:

14holes: 200g,240g,260g 18holes: 240g,280g,360g