IBM UJ862 Ultraslim DVD Multi-Burner Writer For Thinkpad T40, T40p, T41, T41p, T42, T42p, T43, T43p, R50, R50e, R50p, T60, T60p, T61, X60, X60s, X61, Z60, Z60t, Z60m, Z61t, Compatible Part Numbers: 42T2506, 39T2851, 39T2507, 39T2570, 39T2579, 39T2677, 39T2676, 3P3342, 13N6768, 13N6769 TC-Motor 420 24T Rear Sprocket 24 Tooth For Monkey Bike Z50A Z50 Z50R Z50J