PREMA's PRI-2 PremaFill reinforced passenger and light truck tire plug inserts are designed to get you back on the road quickly. These temporary tire repair units are made for nail hole type tire injuries and work well on most tires. ATV tire repair, lawn mower tire repair, car tire repair and light truck tire repair has never been so easy. Each repair unit is 3-3/4 inches long and is reinforced to provide a safer option to get your tire on it's way. This box includes 50 blue reinforced rubber tire injury repair units.