This is a A-400-1618 Shaft, Rectangular PN: 400-1618Main Description As Following : A-400-1618 Shaft, Rectangular PN: 400-1618 Found in Section & Models : Driveline > Driveline Components, Weasler Domestic 80 CV: 14 Series, Weasler Domestic: 12 Series, Weasler Domestic: 14 Series, Weasler Domestic: 1800 Series, Driveline > Shafting & Tubing, Weasler Domestic 80 CV: 14 Series, Weasler Domestic: 12 Series, Weasler Domestic: 14 Series, Weasler Domestic: 1800 Series Associated Items : New Also This is An Aftermarket Product And : Weasler alternative to original part. Length: 6' Series: 14 Shaft Size: 1" x 1 1/8" Rect.