Orlimar 318UC Urethane Golf Balls (12-Pack) NEW TriCast Urethane Three-Piece, 318 Dimple Golf Ball The Orlimar TriCastTM urethane three-piece golf ball provides graduated spin technology for performance; low-spin distance and accuracy off the tee, spin control on approach and highspin feel around the greens for greater ball-stopping control. The new 318 dimple pattern optimizes aerodynamics and lowers spin rate to achieve tour trajectory off the tee.