✔ Our scaffolding coupling pins are of high quality and high loading capacity, ensuring safe use<br> ✔Used for indoor and outdoor scaffolding pipe OD 1.69" tube only<br> ✔Easy to use.<br> ✔Galvanized surface allows the product to be kept outdoors for many years without rusting.<br> ✔Lifetime Warranty provides peace of mind from a brand you can trust.<br>