4 wheels enhanced version needn't to use the screwdriver, can be adjusted manually.
<br />4 wheels more safety,2 small back wheels prevent backward,4 positions adjustable shoe frame width.
<br />Easy to carry, fits any normal size shoe width( the adjusting range is 2.95'' to 3.74'', Maximum weight is 220 lb. )
<br />Import PU crystal flash wheels, high elasticity, high wear resistance.Each wheel has 3 LED lights, can be easily identified at night.The rack of the shoes are made of ABS plastic,with a high strength and good flexibility.
<br />High quality safety clasp, not easy to release or break, to ensure users safety.