Saunders VUDU-X String Stop Black. The Vudu-X traps the string in a recoil chamber eliminating resonant strikes while also absorbing limb shock. Both carbon rod versions can be shortened for a perfect it. To determine if you need a 5/16 Specifications for Saunders VUDU-X String Stop: Manufacturer: Saunders Color: Black Features of Saunders VUDU-X String Stop: Replaces current rod dampener Traps string in a recoil chamber Eliminates resonant strikes Can be shortened for a perfect fit Package Contents: Saunders VUDU-X String Stop Saunders 708: VUDU-X String Stop Black