S90A

2 5/8" X 1 1/4"

Boring 2"

S90B

3 7/16" X 1 1/2"

Boring 2 1/2"

S90C

4 3/16" X 2"

Boring 3"

S90D

4 1/2" X 2 1/16"

Boring 3 1/2"

S90E

5" X 2 1/8"

Boring 4"