Tool Rental for the Rivet Tool. This tool allows customers to install a 6mm or 8mm rivet. The 6mm rivet allows for installation of the round bar holders or side cable holders. The 8mm rivet is for attaching glass clamps to the side of the newel post. Please note that you will be charged the full $550.00 for the tool and refunded $500.00 when the tool is returned to Stair Warehouse in good working condition. Rental is for 45 days from the date customer received tool. If tool is not returned within 45 days of receipt, the daily rental for the rivet tool is $7.50 per day.