DX Engineering resin support block clamps allow an element or even a complete antenna to be mounted, while still insulating it from its mounting configuration. This is especially helpful when it's not possible to use an insulated boom to element bracket. DX Engineering resin support block clamps are useful for securely mounting tubing to any flat surface, while providing electrical insulation. They're available in many sizes to accommodate various project applications. Stainless steel reinforcement plates are available to increase clamp stiffness but must be purchased separately.