Improved Chipbreakers
A big part of a chipbreaker's function is to dampen vibration, but chipbreakers on metal bench planes are usually quite thin. Traditional wooden planes, infill planes and Japanese planes typically have much thicker chipbreakers (as well as thicker blades).

Our chipbreakers are made of High Carbon Tool Steel and are 1/8" thick with a .015" lip ground at a 1 degree angle to provide excellent contact between the leading edge of the chipbreaker and the blade. Very solid. Supplied with the chipbreaker screw.

Lie-Nielsen chipbreakers are designed specifically for our tools. It is possible that they may fit some original Stanley or Record planes, but critical dimensions of these and other maker's tools varied over the years. 

Please note that all pictures below have the Improved Chipbreaker in the foreground.