Application : For Costco- Arcan dual pump plunger 3 or 3 1/4 Ton floor Jack,Replace Part Number :214739. Function : Quality Replacement Parts for Repairs. Products include : This kit covers all of the seals for the complete hydraulic unit (14Pcs). High quality : Made of high-quality rubber. Durability and strength for repeated use. Satisfaction Guarantee - If you're not 100% satisfied with our product, simply return it for a full refund in 60 days, guarantee with 12 month's warranty. Package included 214739 Floor Jack Seal Repair kit (14Pcs) .