Great Lakes Custom Tooling is offering a 10%-20% discount coupon on custom tooling manufactured by GLCT. The discount applies only to end users for one order and expires on 10/31/09. For orders of $1,000-$4,999, the discount is 10%; for orders of $5,000-$9,999, the discount is 15%; and for orders of $10,000 and more, the discount is 20%.