A new old stock oscillation guide screw for the classic 300, 300A, 300C, 300 CENTURY, 300S, 301, 301A, 301C, 301S, 330, 330A, 331, 350, 350A, 400, 400S, 410, 410A, 411A, 440 MATCH,440ALC, 441, 441A, 441L MATCH, 441ALC, 810, 810A, 840, 840 MATCH, 841, 841A MATCH, 900, 901 & 910 models.