Half-Size Breadboard with Mounting Holes : ID 4539 : $5.00 : Adafruit Industries, Unique & fun DIY electronics and kits
DEYUE breadboard Set Prototype Board - 6 PCS 400 Pin Solderless Board Kit for Raspberry pi and Arduino Project
For Arduino breadboard 400 pin/ties/holes/points solderless mini breadboard PCB Breadboard Kit for Arduino DIY Kit|Integrated Circuits| - AliExpress
OSEPP Breadboard, 400 Tie Points - Midwest Technology Products
Breadboard Solderless Prototype PCB Board \u2013 ALLUS BB-2001 (15pcs) 400 Pin with 4 Power Rails and Double Sided Tape for Raspberry Pi and Arduino - Newegg.com