<p>-Suitable for Children's bicycles of 18"/ 20"/ 22"</p> <p>-It ensures your kids' safety and prevents accidental injuries when learning to ride.</p> <p>-Fittings are supplied for easy installment.</p> <p> </p> <p>Specification:</p> <p>Material:Plastic + Metal</p> <p>Color:Silver</p> <p>Wheel diameter: Approx. 13cm / 5.1 inch </p> <p>Bracket Size: Approx. 21 x 10.5cm / 8.3 x 4.1 inch</p> <p> </p> <p>Package Included:</p> <p>1 Pair Training Wheels (With Fittings)</p> <p> </p> <p>Notes:</p> <p>1.Please notice that don't make training wheels and rear wheel stand on the ground together, one of the training wheel should be 0.6-1cm higher above the ground.</p> <p>2.The load of 88 lbs or less may be more suitable for the wheels.</p> <p>3.Please look carefully to the pictures and make sure if these training wheels can be installed to your bikes.</p> <p>4.Some bikes like those one-armed-frame bikes and bikes that rear frame tail hook angle are particularly large are not suitable for this training wheels.</p> <p>5.The width of the frame tube is required within 2.6cm</p> <p> </p> <p> </p> <p>Training Wheels Assembly Instructions</p> <p>1.Insert bolt though wheel.</p> <p>2.Then inset bolt though the wheel and crank.</p> <p>3.Attach nut and tighten. You will require two wrenches to tighten this properly.</p> <p>4.Remove rear axle nut from bicycle wheel axle.</p> <p>5.Center the locking brace on rear wheel axle, then put the crank onto the locking brace.</p> <p>6.Determine desired height of training wheels. When attached, the training wheels should have about 6-10 mm（1/4 to 1/8 in）clearance from the ground.</p> <p>7.Keep your bicycle vertical with ground, make sure two training wheels vertical with ground too.</p> <p>8.Tighten axle nut by adjustable wrench.</p>