• Bolt Down Post Shoe (Twin Bolt). • The Powapost Bolt Down Shoe is designed for use when posts are required to be installed on an existing hard surface such as a concrete or wooden base. • Ideal for use when building carports, pergolas, fencing and decking. • Before drilling, use the shoe as a template to mark drill hole positions. • Then secure the shoe to the surface using four bolts suitable for the job. • It is important to follow the manufacturers guidelines when selecting the appropriate bolt fixing.