Battery holder

thingiverse

Umbrella Lock for Patio Stability A clever device designed to keep patio umbrellas firmly in place when tilted to block harsh sunlight. Meant specifically for 37mm umbrella poles, it may also work on sizes ranging from 36-38 millimeters, although its performance has not been thoroughly tested. If you find this innovative solution helpful, consider showing your appreciation by making a donation to my PayPal account. This gesture will help offset the time invested in designing this useful accessory.