Heavy duty webbing strap with 3/8" x 1/2" square drive/21mm x 13/16" AF cam for tightening. Cam has plated finish for corrosion protection. Draper Oil Filter Remover Wrench Heavy duty webbing strap with 3/8" x 1/2" square drive/21mm x 13/16" AF cam for tightening. Cam has plated finish for corrosion protection.