Unistik 3 Comfort Lancets. Contents: 100 pieces. Sampler: No sampler required, this is a safety lancet for professional and single use. Features: - Lancet Diameter: 0.4mm (28G) - Puncture Depth: standardized and independent of the user. - The Comfort Zone Technology increases comfort when lancing by directing the feel and the perception of pain. - Activation in one click, the needle pulls back immediately after use, lockout indicator prevents repeated use. - Targeted positioning. - Intuitive use, minimal training required.