Jumbo Speed Ramps 7.5cm End Caps Black, Pair. An exceptionally tough speed ramp made from 100% recycled material, height 75mm for 4mph zones. Each Section has an integral interlocking facility for ease of siting and installation. Each inner section has incorporated white reflectors for extra visibility. 40mm x 25mm channel on the underside allowing for hose/cables to be located in. All sections are pre-drilled ready for inserting relevant bolt for specific road surface, i.e. concrete or asphalt. 120mm x 60mm area allowing for a clients name to be embossed.