If blue is your color scheme add our Blue Construction Hat Bottle Opener Keychains to your party giveaways. Plastic hard hats are great for celebrating a new job as a Carpenter or Adviser. Each blue hat is 2 1/2"L x 1 3/4"W x 1"H Our plastic Construction Hat Keychains are priced by the dozen. Sold in a pack of 12 keychains. Please order in increments of 1 pack.