Universal for Square Tube Frame: Roykaw new generation golf cart armrest is universal fit for 1’’ or 1-1/4’’(=1.25’’) square tube frame, compatible with EZGO, Club Car, Yamaha and most square tube frame vehicles. (Notice: Will not work on round tube frame vehicles.) No Drilling Required--Easy Installation: No complex drilling required. Providing all necessary mounting hardware. Effortlessly combine the golf cart armrest with the pre-drilled brackets and secure them in place. (Offer installation manual, if you encounter any problem, please feel free to contact us.) Self with Phone Holder: Adopts 2 in 1 design that our golf cart rear seat armrest comes with both cup holder and phone holder. The slot on the armrest also able to carry small items, such as keys, pens, scorecards and more. Waterproof Material & Drain Holes: No more worrying about wet the armrest in the rain! Our golf cart arm rest is crafted from ABS materials that making the armrest adapted to the different weather. And both the cup holder and the cell phone holder are each designed with drainage holes at the bottom, self-draining and easy to clean. No Effect on Rear Flip Seat: After mounting this golf arm rest, the rear seat can be flip normally, no need to repeatedly remove it. Patent-pending: Our innovative design sets your golf cart apart from the rest, adding a touch of distinctiveness！ Roykaw Golf Cart Armrest with Cup Holder Compatible with EZGO/Club Car/Yamaha & Most Brand, Universal Golf Cart Rear Seat Arm Rests with Phone Holder, No Drilling, Fit 1.0"/1-1/4" Square Frame