PTK Bike Training Roller. Product easily adapted to the rear axle and can be used on bicycles with or without locking.
 It is possible to regulate the physical effort as it allows changing gears.
 Can be used from 20 to 29 and 700 hoops, with or without locking.
 DETAILS:
 - Easy and practical to store or transport, as it is collapsible;
 - For bikes with or without lock;
 - It is not necessary to disassemble the bike;
 - Supports users up to 100kg;
 - Fits from 20 to 29 hoops;
 - Black epoxy finish;
 - Great cost-benefit