Weak Link? | National Geographic

first we challenged the chains tensile

first we challenged the chains tensile strength with a most extreme test we

strength with a most extreme test we

strength with a most extreme test we could think of pulling this full-sized

could think of pulling this full-sized

could think of pulling this full-sized military tank

military tank

military tank it weighs 20 tons and rolls on heavy

it weighs 20 tons and rolls on heavy

it weighs 20 tons and rolls on heavy metal tread a semi tractor will be our

metal tread a semi tractor will be our

metal tread a semi tractor will be our tow truck let’s see if the chain can

tow truck let’s see if the chain can

tow truck let’s see if the chain can take it

with the 40,000 pound tank in the

with the 40,000 pound tank in the rearview OnGuard proves that they’ve got

rearview OnGuard proves that they’ve got

rearview OnGuard proves that they’ve got the strength but in the showdown the

the strength but in the showdown the

the strength but in the showdown the excavator will be able to attack the

excavator will be able to attack the

excavator will be able to attack the chain with its hard metal teeth

chain with its hard metal teeth

chain with its hard metal teeth how will the lock stand up to that

how will the lock stand up to that

how will the lock stand up to that punishment we came to a gun range to

punishment we came to a gun range to

punishment we came to a gun range to find out I’m gonna show you exactly how

find out I’m gonna show you exactly how

find out I’m gonna show you exactly how tough our locks really are Rick’s

tough our locks really are Rick’s

tough our locks really are Rick’s shooting at this lock from 40 feet with

shooting at this lock from 40 feet with

shooting at this lock from 40 feet with this badass gun loaded with 357 magnum

this badass gun loaded with 357 magnum

this badass gun loaded with 357 magnum ammunition can the lock withstand a

ammunition can the lock withstand a

ammunition can the lock withstand a barrage of bullets

yes those bullets bounced off that lock

yes those bullets bounced off that lock like Superman so let’s raise the stakes

like Superman so let’s raise the stakes

like Superman so let’s raise the stakes with an ar-15 so this lock took a direct

with an ar-15 so this lock took a direct

with an ar-15 so this lock took a direct hit right into the center of the

hit right into the center of the

hit right into the center of the mechanism right in the chamber of the

mechanism right in the chamber of the

mechanism right in the chamber of the lock it took direct hits to the chain

lock it took direct hits to the chain

lock it took direct hits to the chain link itself bullets going over 3,000

link itself bullets going over 3,000

link itself bullets going over 3,000 feet per second could not penetrate any

feet per second could not penetrate any

feet per second could not penetrate any point of this luck that’s why these

point of this luck that’s why these

point of this luck that’s why these locks are the absolute toughest in the

locks are the absolute toughest in the

locks are the absolute toughest in the world