NordicTrack 900 / 900-T Commercial Ski Machine Replacement Foot Pad WHEEL #1PLEASE MAKE SURE TO ORDER THE CORRECT WHEELS FOR YOUR 900 900 T SKI MACHINE. Most original white or black wheels are deteriorated, brittle, broken Price is per wheel (1). Your 900 Skier will require 8 or 12 if type #3 There are 3 different types of wheels. Pictured is the most basic original style wheel found on the earliest and original 900 and 900 T Commercial Gym Club (as well as limited home sales) ski machines with RED pinstripes and lettering.