Spring Driven Air | Water | Oil | & Grease Series 4000 & 5000 - 1/4”, 3/8”, 1/2” I.D. Series 4000 & 5000 reels are durable and compact for a wide variety of applications with critical space requirements. A full flow shaft and swivel assures maximum product delivery. The low pressure hose is for air or water only. The medium and high pressure hose are for use with oil and grease respectively. Four 5/16" (8mm) diameter mounting holes are provided.