A low-cost, easily manufactured stock puller with unibody construction that positions stock on a CNC lathe is provided herein. An investment-linked account 110 includes a function to automatically transfer money exceeding an upper limit amount arbitrarily set by the customer or money reaching an accumulation target amount arbitrarily set by the customer, from the balance of the investment-linked account 110, to a fund 210 selected arbitrarily by the customer from funds offered by a fund management company 200. The engine has a front side extending in a first direction from a cylinder bore axis of the engine and a back side extending in a second direction from the cylinder bore axis. The lowest part of the closure has sidewalls with interior threads or a snap-on rib, as desired.