EXHIBIT 7.1

AGREEMENT OF JOINT FILING

     Pursuant to Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned persons hereby agree to file with the Securities and Exchange Commission, the Statement on Schedule 13D (the “Statement”) to which this Agreement is attached as an exhibit, and agree that such Statement, as so filed, is filed on behalf of each of them.

     This Agreement may be executed in counterparts, each of which when so executed shall be deemed to be an original, and all of which together shall be deemed to constitute one and the same instrument.

     IN WITNESS WHEREOF, the undersigned have executed this Agreement.

Date: July 6, 2010

/s/ Norman C. Harbert  

Norman C. Harbert, Individually 

Harbert Family Limited Partnership
 

/s/ Norman C. Harbert  

Norman C. Harbert, managing general partner 

Harbert Foundation
 

/s/ Norman C. Harbert  

Norman C. Harbert, chairman 

/s/ Ronald E. Weinberg  

Ronald E. Weinberg, Individually 

Weinberg Family Limited Partnership
 

/s/ Ronald E. Weinberg  

Ronald E. Weinberg, managing general partner 

/s/ Byron S. Krantz  

Byron S. Krantz, Individually 

Krantz Family Limited Partnership
 

/s/ Byron S. Krantz  

Byron S. Krantz, managing general partner