Wrapped stem: dia. 1/4" (6 mm) 9 pcs, dia. 5/16" (8 mm) 9 pcs, dia. 3/8" (10 mm) 9 pcs, dia. 1/2" (12 mm) 3 pcs and 9/16" (14 mm) 3 pcs in a box Used for injury repair at angles above 25 degrees For use in radial and bias ply tires. Designed for chemical or heat vulcanization. Wrapped stem: dia. 1/4" (6 mm) 9 pcs, dia. 5/16" (8 mm) 9 pcs, dia. 3/8" (10 mm) 9 pcs, dia. 1/2" (12 mm) 3 pcs and 9/16" (14 mm) 3 pcs in a box