Review on Set of 4 Bobbin Winder Tires O Ring for Singer Sewing Machines 15-91, 66-16, 99K, 128-3,15287-A by Gelin Battle

five because they work but not right away. I have a 1935 Singer model 15. I tried the tire right out of the bag and it blew straight away. Finally used boiling water to heat up the tire and it glides great. Place about 2 cups of distilled water in a saucepan on the stove and bring to a boil. They took it off the stove and put the pan in the sink so the heat from the stove wouldn't stick to the pan. I lowered the tire into the pot and waited about five minutes for all of the rubber to heat up. Remove the used spoon from the pan and dry the tire with a paper towel. I immediately rolled the tire onto the rim and it ran smoothly with no punctures. Works perfectly on my car. BE CAREFUL AND DON'T BURN YOUR FINGERS IF IT FEEL TOO HOT JUST WAIT