CHENGYIDA DIY Sewing Parts Triangle Chalk Wheel Tailor's chalk Wheel with 4 Color Replace Refill (yellow,white,blue,pink) 1 blank wheel + 4 Color Replace Refill Color: yellow,white,blue,pink The chalk fits in the large end and the narrow end has a metal roller that draws the chalk on your f Mark fabric lightly and remove all marks before pressing Makes extra fine lines; Allows you to draw chalk lines on your fabric for alterations and marks