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 />Mobile door pulley * 2<br /><img src="//agdetail.image-gmkt.com/m430/100/496/558496100/img/agdetail.image-gmkt.com/100/496/558496100/img/img6.eachbuyer.com/x9/p100/ca214_1.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/100/496/558496100/img/agdetail.image-gmkt.com/100/496/558496100/img/img6.eachbuyer.com/x9/p100/ca214_2.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/100/496/558496100/img/agdetail.image-gmkt.com/100/496/558496100/img/img6.eachbuyer.com/x9/p100/ca214_3.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/100/496/558496100/img/agdetail.image-gmkt.com/100/496/558496100/img/img6.eachbuyer.com/x9/p100/ca214_4.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/100/496/558496100/img/agdetail.image-gmkt.com/100/496/558496100/img/img6.eachbuyer.com/x9/p100/ca214_5.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/100/496/558496100/img/agdetail.image-gmkt.com/100/496/558496100/img/img6.eachbuyer.com/x9/p100/ca214_6.jpg" />