Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the common stock, $0.001 par value, of Superior Drilling Products, Inc. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated:  July 24, 2015

Lone Star Value Investors, LP
By:	Lone Star Value Investors GP, LLC General Partner
By:	/s/ Jeffrey E. Eberwein
	Name:	Jeffrey E. Eberwein
	Title:	Manager

Lone Star Value Investors GP, LLC
By:	/s/ Jeffrey E. Eberwein
	Name:	Jeffrey E. Eberwein
	Title:	Manager

Lone Star Value Management, LLC
By:	/s/ Jeffrey E. Eberwein
	Name:	Jeffrey E. Eberwein
	Title:	Sole Member

/s/ Jeffrey E. Eberwein

Jeffrey E. Eberwein