Ideal replacements for lost or broken tips Eight common sizes included Uses 2.1 X 5.5MM connection found on many universal laptop supplies Suits Maplin models N37FK N28GH N40HJ N19GU N07JC A range of power tips to fit laptop power supplies which use the round 5.5MM X 2.1mm socket system on the leads of popular universal laptop adaptors. Specifications Size in mm Tip Letter 6.0 x 1.0A6.3 x 3.0B5.5 x 2.5C5.5 x 2.1D5.5 x 1.7E4.8 x 1.7F4.0 x 1.7G5.1 x 1.0H