The Jiffy Dip Tube is an easy and economical way to repair either steel or aluminum lift truck cylinders.  If your cylinders are still in certification but have a broken tube, save shipping and repair costs by installing this tube at your own shop.  We have found that a 41/64 drill bit is better for steel cylinders, while a 5/8 drill bit is better for aluminum cylinders.  Both bits are included in our starter kits.