L-3CTRDSK-U..Four sets Pedestal Desk Lock System for Single 3 Drawer. Wedge bracket behind top drawer moves vertical bar to engage clips behind drawer when in closed position. Adjustable position spring catches permit drawers to be locked after control drawer is locked. L-2066 drawer lock is not included in package. Includes bar pre-assembled with rear mounting brackets & spring catches, two engaging clips and one wedge bracket. Sold in sets of four. Set requires lock in top drawer.