The are made of resistant ABS to securely the panels Compatible with modular closet and wire grid modular Square Each connector has 8 slots for panel corners; the inner width of each slot is 4mm Easy to install and attach to the panels; you can put the panels , take apart and reconfigure as many as needed Easy and fast way to up your modular units These are easy to and take apart within minutes and without extra tools. Pull your modular closets and be that these are sturdy enough to keep the panels without wobbling. Note: these are for Square panels and grid panels only. We cannot that they will fit other ' modular closets. Dimensions of each connector (D x H): 1.46 x 0.98 in / 3.7 x 2.5 cm Net weight of each connector: 0.35 oz. / 0.01 kg Material: ABS Color: white Package Contents: 8 * Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.