· 【Size】:The thickness of each jack oil plug is appropriate, the design is lightweight, and the appearance is exquisite, suitable for installing 8mm/0.31 inch holes.· 【Package Include】:This package includes 12 rubber filled plugs, sufficient in quantity to meet your daily needs and replacement. You can carry it with you and use it anytime, anywhere.· 【Widely Use】:This jack oil plug is suitable for most hydraulic horizontal jacks, making it versatile and providing maximum convenience to you.· 【Materials】:The jack oil plug is made of high-quality natural rubber material with strong sealing performance. It has the characteristics of wear resistance, portability, anti-aging, long service life, and is not easy to deform.· 【Easy to Plug】:The uniquely designed jack oil plug adopts a conical design, which is easy to insert or remove and won't waste your time, helping you save time and effort.