Fuel your two-wheeled adventure with this STAG Bike & Base Unit Bundle. Each rack comes capable to carry two bikes with either 15mm thru axle or 9mm skewer. Designed using vacuum cup technology, this rack offers an insane grip strength for your gear! This rack sports a strong yet flexible HDPE up to 1.25" thick which adapts to any car roof. Securely attach this rack to glass, metal, or fiberglass, and take your bike with you for another journey.