[Size] - Fitting for: 1.8/2mL Micro Tube, 25 Places: Overall Size: 75x75x54mm / 2.95*2.95*2.13 Inch (L*W*H); Hole Size: 12.5x12.5mm / 0.49*0.49 Inch; Hole Depth: 26mm / 1.02 Inch [Material] - Constructed of polypropylene plastic and it is waterproof.