The Mammut range of jacks from ESCO offers service professionals a quality heavy duty lifting solution that is safe and easy to use. Perfect for lifting heavy duty vehicles up to 150 tons such as earthmover, construction, agriculture, aviation, trucking, quarry and mining machinery. This high quality jack is built with a special “venturi valve” that pulls the fluid back out of the cylinder head to lower the jack. This valve never allows compressed air into the cylinder, thus extending the life of the jack by many years. All units have brass air motors which last much longer than traditional aluminum or steel air motors found in most jacks. Available in various models depending on load capacity and height requirements. Each jack can be configured with a wide range of accessories to meet all demands; load blocking system, remote control for safe operation and various height extensions to suit all applications. ESCO Mammut Jacks are air/hydraulic operated and equipped with a dual descent valve for greater control under load and an automatic piston return. All units manufactured with high grade graphite seals, O-rings and U-cups.