BowJax SlipJax String Silencers Black 4 pk. Silencers have dimples to help retain the silencer in the string;Minimal effort to install with a bow press;Durable enough for most compound bows today;Weight: 19 grainstable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 1600 Product Group Code: 1600C Pack Size: 4 Inactive: No