Treadmill Doctor Safety Key for Smooth 5.15p/ 5.25/5.45/6.17 Treadmills

I Have a Smooth Fitness treadmill where the safety key would not stay in(would keep popping out). I thought maybe there was a problem with the internal mechanism but decided to order this replacement key. Glad I did as this fits perfectly with no problem. The old key(even though not noticeable) must have just worn down enough to where it would not stay in. Thanks for making it easy to find this on Amazon!

Item as described and works great. The key was a little hard to insert into the keyhole. the flanges on the side of the key had to be squeezed inward slightly to fit the slot but once inside the keyhole it worked fine. Does what it is suppose to do.

I thought the key was a bit pricey, but not as pricey as replacing the entire treadmill! My treadmill is over 10 yrs old but still in great condition. This key works perfectly fine.

Product is exactly as described and works perfectly in my Smooth Fitness treadmill. I was relieved to see it's available to buy since the used treadmill I bought didn't come with the key. Snaps right into place and I don't have to worry about it until I'm done my run. Worth every penny.

I’ve had my original key held in with duct tape for a few years. This key came today and it fits perfectly!!!

I needed a new key for my treadmill. this one is just like the original.

Shipped quick worked, just a little pricey.

Just as described. Worked perfectly for my model treadmill.

Works perfectly. Treadmill is useless without it.

Too expensive