Holiday ice racing screws are used to make ice racing tires for quads and dirt bikes. Many people also use the shorter 1/2' screws threaded into the lugs of various off road tires for increased traction. A very good alternative to chains for plowing snow in icy conditions. Can also be used for snowmobile track studs.

1/4” high head with a larger shank (.160” O.D.)
Has a .300” washer at base of head, taller head, bigger shank because of increased stresses.

5/8" Size
1000 in Package