Product review (3 stars): This is OK, but didn't you DIY to save money?
Re-attaching the LG boot seal outer wire spring can be accomplished quickly and easily without purchasing this tool. To do so, you will need 1 pair of needle nose pliers and a helping hand (spouse or adolescent will do).

First, realign the boot seal along the outer edge as you normally would. Orient the wire ring so that the expansion spring is at the bottom (6 o'clock) position. Insert the top of the wire ring into the seal. Here's where you need the partner. Have your partner place their finger on the top of the ring so that it doesn't move out of the seal channel. Carefully start tucking the wire ring into the seal channel clockwise. When you reach the expansion spring, stop. You will now have the top and right half of the wire ring tucked into the seal channel, and the rest of the ring will need to be placed. With your partner still holding the top (and right) portion of the ring in the channel, take your needle nose pliers and place one of the plier tips into leftmost loop of the expansion spring. Apply force to open the spring by pushing down and to the left. As long as your partner is holding the spring into the channel at 12 and 3 o'clock, the spring will not jump out of the channel. Once pressure is applied with the pliers, you can use your left hand to work clockwise and tuck the remainder of the ring into the channel. Gentle, steady pressure is all that is needed when using the pliers to push - you don't need to jerk or tear, that's when mistakes can happen.

The whole process should take about 2-3 minutes, and hopefully, you can save $50 on a tool that is basically a glorified set of expanding needle nose pliers.