These full radius steel bungs are 1" long x 3/4" diameter and are 3/8"-16 thread

24mm) handlebars

Classic Chopper Style: The timeless fishtail design provides the perfect finishing touch for custom builds

and a vent tube that is soldered shut

check out How to Mount a Motorcycle Fender - Part 1 from back in 2010

Rocker Box Caps / Covers - Starburst MCM Style - for Triumph Motorcycles 1963 - 1972 Subcategory_Fender Mounts & Brackets These full radius steel bungsThese really cool, cast aluminum Triumph rocker box inspection caps are reproductions of the rare MCM Starburst caps of the 1950's and 60's. These fit unit Triumph motorcycles 1963 1972. You get four of these trick rocker caps with your purchase.