Finally! High quality chaintube at a decent price. Super slippery, sound deadening, very durable, abrasion and and solvent resistant chain tube. We have this tube custom made for us specifically for chain tubes. 1/2 inch ID, 5/8 inch OD. For your convenience, we sell it in 4in (10cm) increments up to 4ft (120cm) long. If desired, we can flare the ends with our special heat flaring process that thickens as well as flares.