Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 90, § 7H

No person shall sell, offer for sale, distribute or install brake linings for use on motor vehicles unless they are of a type and specification approved by the registrar. Under authority granted by section seven, the registrar shall adopt such regulations governing types and specifications of brake linings as to comply with approved safety standards, and shall establish and maintain an approved list of brake linings which meet the specifications so established.