50 yellow crayons bulk - single color crayon refill - regular size 5/16" x 3-5/8" minifigfans bulk crayons let you replenish colors you use most often. 50 crayons of one color per box. regular size, 3-5/8" x 5/16", 50 per box. crayons are non-toxic. conforms to astm d 4236.