Road Bike Bending The Handle Handlebar Seatpost Diameter Bicycle Aerobar TT Put Alloy Triathlon Arm Rest Black 1. Suitable for installation in 22mm to 25.4 mm caliber handle bar 2. The body material system: high material aluminum 3.Sponge Material: 1CM Comfortable foam pads 4.Powder coated black 5.Bars come with foam wrapping