BowJax String Sleeve Silencers Black 16 gr. 4 pk. Helps to eliminate string oscillation while improving speed;Can be used with or without string silencers;Weigh 16 grains eachtable.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