Lockable Barrel Bolt adds an extra measure of security to the whole concept of barrel bolts Now you can use a barrel bolt even when you need a stronger security “upgrade”! Just add your own padlock (not included) to this lockable barrel bolt and it’s secure. This lockable barrel bolt locks closed with no key to keep, no combination to memorize... what could be more simple and more secure than this? Zinc-plated lockable barrel bolt slides smoothly in and out; two notches in the housing keep the bolt “locked” open or closed as required. 6" padlockable barrel bolt locks include “tamper-proof” mounting screws and regular screws, but not the padlock.