"in my opinion, this saved the whole toughbuilt stack from being returned. once you have 3-4 *FULL* cases on the dolly style wheels, it gets difficult lean and roll. these front wheel make it a breeeeeeeeeeeeeeze rolling down hallways and even studio floors. definitely only for smooth surfaces. once you hit old mill floors, rises in pavement, etc...you'll have to tilt to make it over. otherwise - PERFECT addition. god bless the seller/maker and the FB group for pointing me in this direction."
Toughbuilt Stacktech R91/92/93 Rolling Tool Box Compatible Caster Wheel Kit – Glide Pro Heavy-Duty Rolling Conversion (Boxes NOT included)