This wrench is designed to lock onto our black scalloped tubes that we use on several arm sets. This allows for easy length adjustment of the arm set, without scratching the aluminum or anodizing. PROPOSITION 65 Proposition 65 requires businesses to provide warnings to Californians about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm. Prop65 WARNING: Cancer and Reproductive Harm. (www.p65warnings.ca.gov)
