Chalk Size:10x8x76mm 

Chalk Size:10x9.5x80mm

Chalk Size:15*13*110mm
Railroad chalk:25x22x105mm
Road Chalk:4.5mm x 195mm

Package:2pcs/3pcs/5pcs/10pcs/12pcs/20pcs/50pcs/100pcs/144pcs/150pcs/box