Our precast concrete bench ends are made of 5000 psi, air-entrained concrete. Each end has six threaded inserts cast in for attachment of the seat and back slats. The Natural Grey concrete has an etched finish. The sides of the precast ends that face each other have a floated finish that is etched. Because of this variation in finish, there are left and right units. The ends can be sold separately or with the required slats and hardware, assembled or unassembled. This photo shows our precast bench ends with 2x4 wood slats.
Precast bench with 1"x4" plastic "wood" slats. While more expensive than real wood, these plastic slats with a wood-grain texture won't rot or splinter. The fasteners are countersunk into the slats.