depends on what you want to use it on.
To measure your finger size using a finger string, wrap the string around your finger and mark where it overlaps. Then, measure the length of the string in millimeters and use a ring size chart to determine your finger size.
You can buy string dolls on eBaY.com. Thank You For Asking. Love, Lorena Blue
You have to be 21 to buy silly string, because people vandalise buildings with it
You can buy parts for a cordless string trimmer at www.blackanddecker.com. Another site is lawn-and-garden.hardwarestore.com/78-492-string-trimmers-electric.aspx
The standard electric guitar string size is typically .009-.042 inches in diameter.
e string, .010
you can have them string it for you, and they have stringing kits that you can buy
You can buy it in the dollar tree
Wallmart
you can buy them in places where they sell yo-yos
you can buy the plastic string they use at any craft store
Depends on the Model of stihl trimmer you have. The 45 home trimmer from stihl takes .080 but from that model to the larger more expensive ones the string size gets larger.