20 Pack – Box Contains 20 Mark-All Tire Caryons Effortless Marking: Glide Smoothly Across Challenging, Rough, Or Dirty Tire Surfaces, Leaving Behind Bold And Clear Markings For Optimal Visibility Versatility In Conditions: No Matter The Weather Or Surface Conditions, Our Crayons Mark With Ease On Wet Or Cold Rubber, Ensuring Consistent Performance In Various Work Environments Extreme Temperature Confidence: Mark Confidently In Extreme Temperatures, With A Marking Range From -20F To 130F (-29C To 54C), Providing Reliable Performance Even In The Harshest Winter Chills Or Scorching Summer Heat Contains No Lead – Crayons Contain No Lead Or Zinc Compounds