... .6.item No.: 5102,5203,5304,5102S,5203S,5304S.adjustable sweep speed ,adjustable latch sped,door opening freely from 0°-180°,hold ... open adjustable. Advantage 1.Modern style, Exquisite quality & Competitive price2.Variety models ... up business relation in the future. Surface door closer,slide arm optional,passed EN1154 test 500,000 cycles,suitable for timber ...