Muddycreek Tackle Single Rod Holder - Rail Mount tubes are removable, which is great for storage purposes. The rod tubes are produced with right-hand threads, so you can take them off quickly. An O-Ring on the threads absorbs vibration to keep the tube from loosening. Muddycreek states they fabricate the rod holders out of heavier tubing than the competition and with a fully machined radius on the end, rendering a rubber cap unnecessary. There are four models of the Rail Mount Single Rod Holders, so make sure to choose the right one that fits your need. Made of aircraft quality bright finish anodized aluminumStainless steel internal hardwareThe pivot joint has a boss which fits into a bore on the mating part, so the aluminum housing takes the loadSpring-loaded rotational and tilt joints for ease of single-hand operationLocks in at every 18 degrees and uses dual pin driveSingle Rod Holder - Rail Mount Models:Large Vertical - Rail Mount (A-H1-VML): Multi Directional Tilt Large Clamp Assembly 2'Dia. to 3'Dia.Medium Vertical - Rail Mount (A-H1-VMM): Multi Directional Tilt Medium Clamp Assembly 1 3/16'Dia. to 2' Dia.Small Vertical - Rail Mount (A-H1-VMS)Small Vertical - Rail Mount - Single Axis (A-H1-VSS)Manufacturer's 12-month warrantyQuantity per pack: 1