Check the listing for details. 5/16 - 18 THREADED WELD BUNGS Stand-Off .625 long BILLET ALUMINUM USA MADE. Condition: New. Listed at 3.00 USD. These bungs are very low profile. Overall length is only .625" long. Thick enough to not warp from welding, Strong enough for most projects, Small enough to not add excessive weight to your project. These have a 5/16 X 18 internal thread. The OD. of the bung is .750" This is for one piece. Use them to mount anything you want to tanks, seats, frames, anywhere you need threads to mount most anything. Made from 6061-T3 Aluminum. PROUDLY MADE IN THE UNITED STATES OF AMERICA IN ILLINOIS Shipping price good for USA only. Shipping & Handling: Please contact us for a shipping quote prior to purchasing if you live outside the United States. We do ship worldwide! International Buyers Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up; do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as gifts - US and International government regulations prohibit such behavior.