
Guaranteed for life.


Our products
Amazon’s Choice
diamondcord™ – unbreakable starter cord stronger than steel
Eliminates down time, inconvenience and monetary loss. Put your trust in diamondcord™ – made in the USA and backed by a lifetime guarantee.
diamondcord™ – pre-cut pull starter recoil replacement cord
Pre-cut lengths of diamondcord™ unbreakable starter cord. Comes in 10-foot lengths. Abrasion-resistant, chemical-resistant, heat-resistant, and UV-resistant with a lifetime guarantee.
diamondgrip™ – high performance pull cord handle
diamondgrip™ is the strongest and most technologically advanced starter handle in the world. It is built to outlast your equipment and backed by our lifetime guarantee.
diamondlace™ – unbreakable boot laces
diamondlace™ boot laces are the strongest in the world and guaranteed for life. Tested against polyester and Kevlar, they have been proven ten times stronger than competitor laces.
diamondperformance™

It’s present through every phase, from concept to design to material selection and manufacturing. And it’s followed by the toughest quality assurance testing in the business.
The future of our company relies on customer satisfaction and offering innovative, lifetime guaranteed products, so we earn it with everything we do.
What may appear as “mission impossible” to others is precisely the challenges that our team likes best.





Tested and proven
TESTED BY TENSION TECHNOLOGY INTERNATIONAL
PROVEN TO LAST 20x LONGER


Our life-long commitment
RELIABLE PERFORMANCE IN HARSH CONDITIONS
GUARANTEED FOR LIFE!
Tool rentals with diamondperformance™

diamondperformance™ products are the clear choice for all Lowe’s rental centers across North America with diamondcord™ and diamondgrip™ being the exclusive pull cord and starter handle products on all equipment and machinery.

“We have been using diamondcord™ and diamondgrip™ in our machines that utilize a pull starter and I can say in those machines we have had zero failures. We have been really impressed with the product and the level of customer service.” Chris Reed – Sunbelt Rentals Service Manager.

The Home Depot tool rental centers across North America are continuing to phase out alternative products in favor of our unbreakable diamondcord™ and diamondgrip™ .
No more down-time and lost profit caused by broken cords and starter handles!

diamondperformance™ products are now being used at Ace Hardware rental centers!
Save time and money by using diamondperformance™ products at your tool rental location!
How can we help YOU?
Commercial / Industrial
In a highly productive industry, such as logging, your company can ill afford to have unnecessary downtime due to a broken pull cord. Collectively this can equate to huge monetary loss.

Fire Departments / Safety
Fire Chiefs at several fire departments claim that on many occasions they have found themselves in an emergency lifesaving situation when a pull cord has broken.

Recreational / Residential
If you have ever found yourself up a mountain or on a lake with a broken pull cord in hand, no cellular reception and the sun setting fast, you know the frustration and fear this can create.
