Description PTO Splined Adapter for Tractors up to 75 PTO H.P. - Clamp Type - 1 3/8", 21 spline female x 1 3/8", 6 spline male - Extends PTO 4-3/8". This item is a suitable alternative for the following: 442-3200087, 033200087, 03200087, 442-033200087