2ML-N1002 Clear Glass, 5*28.5mm Insert, Conical Base with Polyspring, 100pcs/pk. 2ML-N2002 Clear Glass, 5.8*28.5mm Insert, Conical Base With Polyspring, 100pcs/pk. 2ML-N2004 Clear Glass, 5.8*31.5mm Insert, Conical Base, 100pcs/pk. Add to Favorites. 4ml Shell Vial, 44.6 x 14.65mm, clear glass; 15mm PE Plug, transparent 100pcs/Pack.