The MOD Oil Caps are oil impregnated polyester capacitors. Enclosed in an aluminum "mug", they are manufactured with quality materials for durability and superior performance. Originally used solely in Hi-Fi audio equipment oil filled capacitors are now widely used in guitar amplifiers for their rich, natural tone. The MOD caps make great coupling caps; they are not intended to be used as filter caps. Non-Polarized. Minimum lead length = 1.57", lead diameter = 0.03" Made in Brazil Values available (all 600 VDC): Capacitance Diameter x Length .001 μF