1、TPR rubber material caster wheel is quiet and wear‑resistant, does not hurting the ground 2、Can be directly installed on the design part of the host with bolts, convenient and simple to use 3、The base is an integral structure, come with large carrying capacity, simple and practical 4、The package contains 4 industrial caster wheel, easy for you to use and replace 5、Steering caster wheel is silent, come with stable structure and long service life Item Type: Caster Wheel Material: TPR rubber Single Load: 30 kg / 66.1 lb(approx.) Floor Plate Size: Approx. 45 x 40mm / 1.8 x 1.6in Installation Hole Distance: Approx. 30 x 36mm / 1.2 x 1.4in Installation Height: Approx. 50mm / 2in Quantity: 4Pcs Uses: Industrial casters 4 x Caster Wheel