Where are poker vibrators typically used compared to surface vibrators?

Poker or internal vibrators are inserted directly into fresh concrete and are the standard choice for columns, beams, walls, and deep footings. Surface vibrators such as vibrating screeds are used for slabs on grade, pavements, and roads where a flat dense top layer matters more than deep internal consolidation. Many contractors run both types across a single project since structural elements and slab works have different finishing requirements. Sparkline Group stocks both categories so site teams can standardise power units across the fleet. This reduces the number of spare parts and accessories that need to be kept in site stores.