The 3 hole connector block holds up to 30 wires. The 2 hole connector blocks holds up to 20 wires. size: for 2 Hole: Approx 20 x 17 x 14mm(L W H), 3 Hole: Approx 26 x 20x 14mm(L W H). The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
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