Omega 6 Ton Bottle Jack (10065B)PN: 37150 UPC: 854185005752 Features Hydraulic system is protected from internal damage by a patented by pass mechanism Machined and polished cylinders with die cut threads provide non abrasive leak free, durable performance Fabricated from hard cast steel with heat treated critical stress areas Serrated heat treated saddle provides generous lifting area and secure grip Heat treated extension screw allows low pick up height adjustment and maximum lift