Screw Cap Micro Tube, 0.5 ml, PP, with smear edge, with knurls, with conical bottom skirted writing block O-Ring Cap Assembled Sterile, no print, 100 pcs./bag , 10 bags/case, 1000 total. Catalog No. NC9216421. $507.50 / Case of 1000. Qty Check Availability. Add to cart.