Notes: 63235.6 WASHER 6.2X16.5X2 MAT101 CARRARO STD 1-0 is original BOBCAT-SAMBRON product. 63235.6 WASHER 6.2X16.5X2 MAT101 CARRARO STD 1-01 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849