Mower Blade 21.75" long x 2.25" wide, 1.00"ID center hole, outer holes are oblong .375" or 3/8" wide x 1.05" long and are on 3.50" center. CW. Oregon number is 90-026, 90026 which supersedes to 90-514, 900514
Mower Blade 14.37" long x 2.00" wide x .75"ID hole x .20" thick. Clockwise. Allidin UWH5, Toro 106108 and 106635 is a set of 3. Blade is stamped 106108.