Check the listing for details. BowJax Ultra BowJax I String Silencer, 4 Pack Flo Green. Color: Green, Condition: New with tags. Listed at 10.99 USD. BowJax Ultra BowJax I String Silencer, 4 Pack Flo Green String dampener that can be installed on the string without the use of a bow press. Can be fastened with serving or included zip ties. Normal 0 false false false EN-US X-NONE X-NONE WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.