Our cleats are made from malleable iron and are hot-dipped galvanized. 

The 8" steel cleat uses a 5/16" bolt.
The 10" and 12" steel cleats use a 3/8" bolt.
The 14" steel cleat uses a 1/2" bolt.

C-6-M - 6" Steel Cleat - 1.00 LBS
C-8-M - 8" Steel Cleat - 1.50 LBS
C-10-M - 10" Steel Cleat - 2.25 LBS
C-12-M - 12" Steel Cleat - 3.50 LBS
C-14-M - 14" Steel Cleat - 4.00 LBS