coker cranks

So I got a Coker big one the other day, which is really nice, way different then my 20. I gotta take it for one ride and when I looked down my pedal had stripped the bottom part of the crank completely out. What’s the cheapest strong set of 150mm cranks? If someone has a set of square taper cranks that you wouldn’t mind selling pm me cause I need a replacement set fast! Thanx in advance :sunglasses: