Driftmaster Flat Rail Bases
                            
                        
                        
                        
                        
    
                        
                            
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
    
    
                        
                        
                        
    
                        
                     
                        
                            Li'l Pro Series: For 1" or wider flat rails (ideal for pontoon boats). Can also be used on any flat surface. 3/16" mounting holes. Pro Series: For 1" or wider flat rails (ideal for pontoon boats). Can also be used on any flat surface. For aluminum rails, use 3/16" X 2" bolts; use screws in fiberglass or wood.