2 each Apex Dayton Universal Joints in new surplus condition. The inside diameter is 3/8” (.375). The outside diameter is .495 and the overall length is 2.310 inches. They have a date of 1958 stamped on them and a UJ-52 which may be the part number. They look like the MS20270B8 which has an overall length of 1.875. These are 2.310 long, a little longer overall length than the MS20270B8.

Even though it is in new surplus condition, buyer is responsible to make sure that this part will work for their application as there is no warranty or guarantee expressed or implied.