30cm Gray Wheel 1/2" Bushing with Twist Lock Knob The wheels are very tough, pliable tire for easy rolling even over bumps, stairs, or curbs. The 30cm wheel has a maximum weight limit of 121 lbs. per wheel. It will get you over terrains that are not accessible to other wheels. The 30cm wheel is also available in rigid and swivel caster wheels. The Twist Lock Knob (TLK) is a knob that attaches to the end of our 1/2" axle that has a special groove that the TLK locks on to. The TLK makes it easy to attach and unattach wheels from your axle. In the case of this wheel, the TLK is actually attached to the hub so you won't lose it.
Product Name: 30cm PU Beach Wheel Product Number: WZ1-30U Dimensions: 11.8 x 7" (30 x 18cm) Width at Bushing: 7.3" (18.5cm) Max. Payload per Wheel: 121 lbs. (55kg) Weight: 2.91 lbs. (1.32 kg) Tire Material: Polyurethane Hub Material: Polypropylene Ideal Pressure: 2.4 psi (0.17 bar) Pressure Range: 2-4 psi (0.14-0.28 bar) Temperature Range: 5 to 167 degrees F (-15 to 75 degrees C)