Installation Instructions HELPFUL TOOLS: Electric Drill Hammer Allen key Philips Pencil Tapeline Screwdriver Step 1: Mark Position IA. Measure and mark base position and center line for mounting bracket towel bar) B. Mark base position for mounting bracket installation. (For other 3-piece accessory) Step 2: Remove mounting bracket Remove mounting bracket with Allen key from accessory. Electric Drill Step 3: Drill Holes Place mounting bracket into center of the marking base position.