Brick with Holes - 1 x 16 - #3703

The holes line up perfectly with standard axle pegs, so it locks into builds without any wobble. I used two of these for a long chassis and they held together solidly during testing.

The holes along the length make it way easier to pin pieces at multiple points instead of just the ends. Fit was snug on my first try and it's held up fine after a few rebuilds.

I grabbed this as a spare for my kid's project bin and it snapped onto the existing pieces with zero fuss. The 1x16 length is perfect when you need one long span instead of chaining a bunch of short bricks together.