Cable ramps are crazy expensive. The cost of these is amazing! They're like 1/3 to 1/4 the cost of name-brand cable ramps. (The price seems to go up and down; I've seen it as low as $38, but I paid $44. They are currently listed for $63 as I'm typing this).These ramps are two-channel, but you could fit several cables in each channel. Each channel trough is about 2" x 2".The interlock features work pretty well.Construction does seem pretty sturdy. I've only used them once so far, but they did great. I did notice a strong plastic/rubber smell, but I plan on using these outside so that isn't an issue for me. I imagine the smell would fade over time, but I'm not sure.