Available in different sizes:
30411 - 1/4" x 3" x 3-1/2" O/A x 2-3/4" C/C
30412 - 1/4" x 3" x 4-1/2" O/A x 3-3/4" C/C
30413 - 1/4" x 3" x 5-1/2" O/A x 4-3/4" C/C
30414 - 1/4" x 3" x 6-1/2" O/A x 5-3/4" C/C
30415 - 1/4" x 3" x 7-1/2" O/A x 6-3/4" C/C