The Professional and Economy range of breadboards have contact positions identified by alphanumeric grids. The Professional also have colour coded polarity indicators.
Professional Small – size: 80 x 54mm with 400 tie points. Contact life: over 10,000 insertions.
Professional Large – size: 166 x 54mm with 830 tie points. Contact life: over 5,000 insertions.
Economy Breadboard – size: 175 x 61mm with 840 tie points. Contact life: over 5,000 insertions.