... :28mm,30mm,32mm,34mm,36mm,38mm 3)solid and hollow bar adjustable swivel screw jack base we can offer the products to ... Prompt Delivery Quality Approvals Small Orders Accepted1)name: swivel base screw jack 2)material:Q2353)ODsize:28mm,30mm,32mm,34mm,36mm ... black Main features:versatile types can meet different requirements, forged and stamped styles can be suitable in different usageslight weight, small ...