These are spring separator sliders from Schmidty Racing Suspensions for Fox Podium / Performance series and Walker Evans shocks. Available in different sizes for both shock brands. See option details below.

Fox Options:

2.0": for shocks with 2.50" ID springs; 1/2" x 3/8" leg length

3.0" : for shocks with 3.75 ID springs; 1/2" x 2.5" leg length; with 3/4" thick flat between springs

Walker Evans Options:

2.0": for shocks (2017-current) with 2.5" ID springs; 3/8" x 3/4" leg length

2.0": for shocks (all years) with 3.0" ID springs; 1/2" x 2.5" leg length