Razor channel spikes are made of stainless steel plate. In general, there are 3 types because of different profiles: U channel razor spikes, razor comb spikes and W channel razor spikes.
Compared with wall spikes, razor channel spikes don't look too aggressive or deterrent, or cause any heavy injuries to any intruder. But they are effective in keeping intruders, burglars, thefts and other unwelcome visitors off when fixed on walls, gates, fences and flat roofs at a minimum height of 2 meters from the ground.