Window Tension Tool For Tilt Spiral Balance H 3787, Engage the Balance and Insert Into the Proper Window Shoe, Pack of 1, Silver, 2 Year Warranty

I replaced the springs in some older windows. I tried to cheap out and use pliers but it didn't go as planned. I bought this with low expectations, and it performed well.

It is practical for the old windows

Slips out of hand easy needs better grip on handle

I replaced the spiral balance springs on 14 single hung windows. The forks on the tool did bend apart (separating) after a few windows, but I squeezed them together again with pliers and they worked fine again afterwards. By the end, the shaft of the tool was bent in a gentle "U" shape from pulling the spiral springs downwards so many times, but it is not broken and did the job. I would suggest making the tool out of a more rigid metal. Otherwise I recommend it, especially for the homeowner who uses the tool for the windows on their own house and doesn't need it to stand up to years of weekly use.

Works as advertised

I had some window balances to replace, and this tool came in very handy for tensioning the balance. There is a notch in the balance that this tool sits right in - wind clockwise several times, then easily place it in the balance. Definitely recommended.

Product is exactly as described and of great quality. Have used it to set tension on several windows now.

The metal that the hook portion of the tool is made of is not strong enough to withstand the torque force of the spiral spring. The hooks bend out of shape and no longer grip the pegs at the end of the spring. Which renders the tool useless. The tool is worthless.

Although very light material it works as expected.

Does the job

If your changing sash springs you’ll need this in your tool box

perfect

It's made well but has little trouble staying hooked on.