Precision ball bearing partial extension runner for drawers with 27 mm groove Precision partial extension slide with pull-out stop and roll-out prevention Slide and ball race form a single inseparable unit Arrow marking fitting direction Additional front support for drawers longer than 430 mm Suitable for wooden drawers with grooved, rebated or loosely fitted bases Runners welded in for maximum stability Comes with assembly screws for easy installation Made of high-density thickened steel, corrosion and oxidation resistant ensure quality and service life