They are each 1.5 inches long
You can purchase them here if you’re interested : https://www.etsy.com/listing/915872912/packed-bowl-pin-hard-enamel-pin?ref=shop_home_active_1
A grade – $8 each or a full set (4) for $25
B grade – $5 each or a full set (4) for $15 (limited)
$4.20 shipping within USA!
*A grade – No imperfections, sold at a normal price.
*B grade – Slight imperfections such as color bleeding, spots in the enamel, or scratches in the metal, sold for less