96-04 Mercedes SLK 230 Hydraulic Cylinder Repair Kit with Picks Convertible R170 Material NITRILE 70 RUBBER O-RING......... ROD Seals O-Rings Plus Multi-page Guideline Plus Pick Set for removal of old O-rings Free Hydraulic Pump Refill Instructions For the DIY Repair of all 5 Hydraulic Cylinders that raise lower & Lock your Convertible Top Vario Roof Covers Mercedes SLK Class....R170 Chassis...1996 - 2004