McKesson Argent™ Nail Nipper Spring, 1 Each Balance Training Screw cap with sampling device Style:Pair (Left & Right) Screw cap with sampling device is transparent with white cap and has graduations Protects all your valuable supplies * Its stylish ergonomic design makes it the perfect case for men and women as well as children seniors and medical personnel * The case can be attached to a belt placed inside a purse or briefcase or simply carry it using the detachable hand strap * When used with the Refreezable Gel Pack in its proper compartment the PenPlus case can keep insulin and other injectable medications safely cool for up to 12 hours * The case holds up to 4 vials of insulin or 2 Insulin Pens * Other medications requiring cool temperatures may also fit into this special cooling compartment * An additional compartment keeps all your other supplies safely organized * Securely holds Vials Pens Syringes and many other medical supplies * Special insulating fabric * 3 zippered compartments * Removable hand strap * Sturdy loop on case for belt attachment * Carry on your waist * Carry in your hand (detachable strap) * Contents not included Replaces spring in double spring Stainless steel construction