Check the listing for details. Firenock AeroBowString Serving Jig Bow String Server ABSSJ v1.2 + Spool. Condition: New. Listed at 270.00 USD. Brand new ABSSJ v1.2 is the latest improved version of the original ABSSJ. ABSSJ v1.2 is equipped with string lock for holding the string in place and spool holder handles for easy drag adjustment with or without the jig body. ABSSJ v1.2 like the original ABSSJ is equipped with a high performance nine-element drag system (5 graphite-weaved drag washers plus 4 titanium drag washers). This drag design allows the serving tension to be set up to 400% higher than what most other string serving jigs can do today. The drag system is pre-lubed with Teflon/PTFE drag grease, and it is also ready to be oil filled as the drag knob is fitted with dual O-rings. The drag system can be used with a computer-controlled, brush-less motor-serving machine (~ 1,600 RPM) without pressure fading or component failure for professional string building environment. - Photos shown ABSSJ v1.2 with thread and spool (thread not included) Key Features of ABSSJ v1.2String lock to prevent string jumping out even without any tensionSpool holder handles for easy spool installation and drag adjustment with or without the jig body Detachable spool with drag system for easy spool replacement and retaining drag pressure settingCompatible with most current serving thread spools and market available spools (e.g. Specialty Archery)Spool is supported by two ball bearings (i.e.g shaft-less support) for smooth and direct drag operation Hollowed titanium rollers for strength and light weightFlanged ball bearings supported rollers for ultimate smoothness, minimum tolerance and ultimate control7075 Aluminum main body secured by two GR5 Titanium shoulder screws for rigidity and perfect alignmentBoth spool lock and drag lock knobs are dual O-ring fitted to allow stable operation and fine adjustmentBody corners are rounded to prevent thread damage, especially while nicking the thread at high pressureTo see more details of ABSSJ, just type "Firenock ABSSJ" on YouTube Contents:1 Main Body1 Spool Shaft with Drag System1 Spool