Some teachers or students may prefer a breadboard with mounting holes so that it can be securely screwed onto a surface.
Most breadboards do not have this. The ABRA-550 is a 550 Tie Points high quality low cost breadboard with mounting holes which can be screwed onto a surface.
Dimensions: 1-3/8" x 5-10/16".
Notice for California Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov