A helping hand an essential piece of kit to hold the handlebars in place whilst your bike is in a repair stand key features fits regular 260 mm and over sized 318 mm handlebars the handlebar holder is designed to prevent the handlebar and front wheel from rotating when a bike is mounted in a park tool repair stand fits handlebars with a diameter up to 32mm and oversized top tubes up to 50mm hbh 2 works on almost any road or mountain bike