COMPACT DESIGN, HIGHLY PORTABLE. SIMPLE TO USE. ADJUSTABLE DEPTH DIAL FOR LESS PAIN. WORKS WITH MOST GENERAL USE LANCETS. USE WITH TWIST TOP/PULL TOP LANCETS*. INCLUDES: ONE LANCING DEVICE. INSTRUCTIONS FOR USE (READ BEFORE USE). *UNIVERSAL POLYGON-SYMMETRICAL LANCET WITH BODY DIAMETER 0.248" +/- 0.004" (6.30 MM +/- 0.10 MM), LENGTH 0.9000" +/- 0.010" (22.86 MM +/- 0.25 MM) AND EXPOSED NEEDLE LENGTH 0.126" +/- 0.008" (3.20 MM +/- 0.20 MM).