Features: brand new and high quality High quality material - ball bearing caster wheels are made of heavy duty load capacity tpe rubber material and consist of metal construction, l-shape plate 5 install holes (2 on the base plate & 3 on the side plate) easy to install. safe for hardwood floors - don'for t worry our ball casters will damage your expensive hardwood floors and won'for t leave a track on it. Our furniture wheels will help to protect the hard floors. smooth & quite movement - the precision ball bearing in the l-shape plate casters movement nice and smooth; brown tpe caster wheel easy rolling without sounds or noise, and help you protect hardwood floor or carpet against scratch. There are 4 types, 1/1.25/1.5/2 Inches, you can choose based on your demand. These side-mounted casters can roll well, are easy to install, and are attached with mounting screws. Specifications: Material: TPE+Metal Size: 1/1.25/1.5/2 Inches Package Includes: 4 Pack Casters note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.