Nashbar Direct Inc., of Canfield, Ohio voluntarily recalled about 200 2008 Travel Trac Gravity Inertial Trainers because the springs in the resistance trainers can unhook and become a projectile, posing a puncture hazard to users or bystanders. As of the date of the recall, the company had received three reports of springs releasing from the bike trainers. The recalled trainers are folding stands that lift and apply resistance to the rear wheel of a standard bike, converting the bike into a stationary trainer. The recall includes Travel Trac Gravity Inertial Trainers (catalog # NB-TTMIF) with a looping black base with two red support arms. Travel Trac is printed in white on the right support arm and Millennium is printed in white on the left arm. Inertial is printed on the top of the right arm in black with a white border. The resistance unit has a rounded black plastic cover with a soft red elastomer roller. The item number is also printed on the bottom of the last page of the owner's manual. These products were sold at Nashbar's Web site and catalogs from January 2008 through February 2008 for about $330.