BPS Solderless Breadboards have expanded to include a 400 tie point Transparent version. Visibility of internal circuit connections make the BB400T from Busboard Prototype Systems great for students. BPS offers high-quality solderless breadboards rated for 50,000 insertions, including the popular BB830T Transparent BreadBoard. Projects built on the BB830 breadboard can be moved to the BR1 Solderable PC BreadBoard and soldered to make a rugged and permanent prototype. The SB300 and SB400 PC breadboards have the same layout as 300 and 400 tie-point breadboards.