Straight brass connector, .029" wall thickness, approximately 1 1/4” long. I use these in player piano restoration to join hoses or to connect a suction motor to the reservoir on the foot pump assembly. For 5/8” hose.

I've restored player pianos for 30+ years and am glad to answer questions before or after your purchase.  I include my contact info in each shipment or you can reach me through eBay.