NoJak endpin, white plastic De-electrifying your acoustic guitar? Replace your strap jack with our unique NoJak endpin and restore the traditional look. No woodworking, gluing, plugging, redrilling or reaming —; the NoJak endpin fits the same 1/2&;quot;-diameter hole. The Allen-adjustable expansion sleeve gives a secure fit. And if you ever decide to plug in again, swapping back to your strap jack is no big deal. The NoJak Endpin was designed by the Stewart-MacDonald R&;amp;D team. Guitarmakers: The NoJak endpin lets you drill the same hole size for all your acoustic and acoustic-electric models, with no additional reaming or tapering. The pin slides into the 3/4&;quot;-long plastic expansion sleeve, and adjusts from inside the guitar with the supplied black metal screw. 5/32&;quot; (4mm) Allen wrench required.