MediVena Twist Top Lancets, Universal Design, Ultra-Thin 30G, Purple, 100/bx. ONE-CARE Lancets are universal fit and can be used not only with ONE-CARE lancing device, but most other devices available in the market nowadays. Our offering includes ultra-thin 30G lancets (0.3 mm needle diameter) for comfortable blood collection. Tri-bevel and electro-polished needle tip provides low penetration force and gentle puncture for the enhanced user comfort. The product is delivered in compact size boxes of 100 sterile lancets.