Seasonal Source All-In-One Universal Light Stake, 10 Inches, Pack of 100. The All-In-One Universal Light Stake works great for C7 and C9 Light strands, both LED and Incandescent. These clips are made of durable plastic and will last all year long. The mounting base makes it easy to quickly twist and securely lock in your C7 or C9 bulbs. There is no better way to create and eye-catching border in your yard.