
It fit perfectly on my mountain bike's new handlebars. I've read a few reviews about fitment but found it to slide in without any issues. I did keep in mind the wedged design and pushed on the bolt rather than the end cap. ID is about 18.40mm (0.7245") which can be compressed a bit more. I got the plastic down to 0.65". If you go by the product description it may be a tight fit going down to 0.62".

MetalTac Airsoft Speed Loader With Capacity Of 100 Bbs
27 Review

TAC9ER Kevlar Lined Tactical Gloves: Full Hand Protection, Cut & Temperature Resistant, Touchscreen Friendly For Men & Women
45 Review

Hornady Black Diamond By Umarex - Improved Product Name For Enhanced Search Engine Optimization
28 Review

6" Foldable Half Face Airsoft Mesh Mask With Ear Protection And Military Tactical Lower Face Protection By OneTigris
41 Review