Infinite Irons Rolled Rear Liner Spring (.018 X 1.250 Long) - These Are The Rear Springs That Joey D. Uses On His Machines That Have Been Sized To Fit His Liners And Shaders. The Spring Length Is 1 1/4 Inches Long Overall And 5/8 Inch From The A-Bar Screw Hole Center To The Slot Where An 8-32 Screw Will Fit. It Will Allow For A Longer Distance Between Centers Because The Back End Is Slotted. The Spring Width Is 1/2 Inch Wide. Please Measure Carefully To Figure The Fit Of Your Springs. This Spring Is Commonly Used On The Following Machines: The Saros Liner, The Gearhead Liner, The Eris Liner, The Tattooer Liner And The Keyhole Liner. Measure Carefully.