UPDATE 4/5/2024 - PETG Recommended - for ABS/ASA Profile I have scaled it up 1% to account for shrinkage.

This is a replacement bumper end cap for a John Deere E130 front tube bumper. The ones from the factory all vibrated loose over time. This one is designed to have a slightly more snug fit. If you find that it's too loose or too tight for your particular application, simply scale it up or down +/- 1%. 

I feel confident that these will probably also work for other models front bumper, as they appear to be identical on the E100 and D100 line.