Thumb Caps are a fast and efficient way of resealing 16mm blood collection tubes. Evacuated blood tubes come with a plug like cap that can become cumbersome and messy when tying to re insert. These thumb caps are a quick and easy way of sealing these tubes. Natural color. Polyethylene. 1000/bg

Picture shows cap on a #367820 red 16mm x 100mm. Fits all 16mm tubes