Radar Frog Hollow Bikes and the OPEN April 2, 2020 What is a gravel bike best used for? This video from Frog Hollow Bikes takes us on their local gravel ride with the OPEN. Related 1 Radar Finding Myself Video 12 Radar Focus Bikes: Atlas Aluminum Gravel Bike 8 Radar School Night Bikepacking 25 Radar CHOKA Air Inflated Bikes 1 Radar The Hard Way 3 Radar Vermont Mountain Bike Gravel Ride: Woodstock Pomfret Quechee