Training Wheels by KOECTWYM. Details:These training wheels provide the necessary security and stability, assist young kids until they have developed a usable sense of balance on the bicycle, improve the safety of kids. Please make sure the parts are all fastened. The wheels need to be gliding on a surface for the lights to work, as the light works when force of friction is form on axletree. Package Includes: 2 x Wheel 2 x Bracket Arm 2 x Shoulder Bolt 2 x Locking Nut 2 x Stop Block 2 x Gasket 1 x Reflective Tape 2 x Reflective Arm Band How to install: Step 1: Connect the training wheel and the support rod together. First assemble bolts, wheels, washers, bracket arms and nuts in order, and then fix them with a wrench. Step 2: Loosen the rear axle nut of the bicycle, then fix the stop block, and fix the pointed horn of the stop block on the bicycle frame. Step 3: According to the size of the bicycle or wheel, select the appropriate hole position on the...