This kind of bolt hole caster is a very good choice with high qualtiy and competitve price. The bolt hole is better for fitting and the brake has good functions on advancement speed and advancement direction. The wheels material is TPR, which has and oustanding performance on rotary quietness and anti-vibration. Size Wheel Diameter Width of Caster(mm) Height of Installation(mm) Top Plate Outer Size Load Capacity(kg) Wheel Material 2.5inches 63 32 93 95*65 80 TPR 3inches 75 32 105 95*65 100 4 inches 100 32 130 95*65…