CONSTRUCTED OF HEAVY-DUTY MATERIALS OUR HANDRAIL BRACKETS OFFER STRONG AND DURABLE RAILING SUPPORT. STANDARD HANDRAIL BRACKET IS SUPPLIED WITH SELF-DRILLING SELF-TAPPING SCREWS. MOUNT BRACKETS TO STUD IN WALL. MAXIMUM SPACING BETWEEN BRACKETS IS 4 FEET. CONSULT LOCAL CODES FOR RAIL HEIGHT AND OTHER REQUIREMENTS. WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov - Nickel (Metallic)