Notes: 6000121555 HEX SOCKET SCREW PLUG DIN 908 M24X1.5 is original CLAAS product. 6000121555 HEX SOCKET SCREW PLUG DIN 908 M24X1.51 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849