TV Jones EM1 Humbucker Ring Low BK; Pickup Mounting Ring for TV Jones Universal Mount Pickups; 1 piece; allows the mounting our Universal Mount (Filter'Tron size) pickups in a standard humbucker cavity; Material: Plastic; Ring height: Low, for use at the neck position on instruments with a high (T.O.M.-Style) Bridge or at all positions on instruments with a low (F-Style) Bridge or Tremolo; Height: 4,5 - 6,7 mm (0,18" - 0,27"); Outer Dimensions (L x W): 88,9 x 44,5 mm (3,5" x 1,75"); Inner Dimensions (L x W): 71,5 x 34,5 mm (2,82" x 1,36"); Fixing Screws distance (L x W): 36,5 x 80,9 mm (1,44" x 3,19"); Pickup Screw distance: 78,5 mm (3,09"); Colour: Black; Made in USA; Note: These rings will not fit standard humbucker pickups. Original Gretsch and TV Jones Filter'Trons have a 1/4 inch corner radius, whereas some modern Filter'Trons are made with more square-like corners and may not fit this ring