There are screw holes? you can adjust the height<br />Durable<br />By the heavy load<br />Easy installation<br />Silent when the glass doors slide<br />Color: Silver shelf? wheels white<br />Material: 304 quality stainless steel? high-quality nylon wheel<br />Wheel size:  25.8mm diameter 6mm thick<br />Requirements: glass thickness 6mm-8mm? hole diameter wheels glass needs 10-14mm<br />Additional information: This pulley lead screw is rotated to adjust the level of the last round<br /><br />Mobile door pulley * 2<br /><img src="http://img6.eachbuyer.com/x9/p100/ca177_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/ca177_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/ca177_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/ca177_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/ca177_5.jpg" />