The problem: Wooden stringers are endgrain and won’t hold a screw and the triangle wants to break off with the grain anyway, this makes the steps warp and rock back and forth.

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Solution: Stair Saver screws into the continueous part of the stringer and up into the step and riser. eliminating the triangle and locking down the stairs and riser.

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These are solid 1/2 inch square steel bars, if you ever want to replace the stairs entirely just re-use them to make new stringers.

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stair savers are $14.50 each. 

free shipping on 10 or more.