About 150,000 sets of four-shot fireworks displays are being recalled because they could cause injury or death by tipping over and firing their charges at onlookers, the Consumer Product Safety Commission said Tuesday. Starr Display Fireworks of Fargo, N.D., is voluntarily recalling the devices, which consist of four tall mortar tubes mounted on a board and connected by a single fuse. The recall covers four-shot fireworks racks bearing Nos. 100, 200 and 300 that were made since 1987, the commission said. The items, which sell for about $40, were sold through 100 wholesalers to retail stores nationwide. The products carry such brand names as No. 100 Silver Palm, No. 100 Glittering Comet, No. 200 Celestial Splender and No. 200 Crackling Delight.