DO-IT mold model SPJ-3-ATK features 3 cavities ranging in size from 1/4oz up to 1/2oz. These swim jigs are lethal when worked through cover – bass will slam them. Build your own pro swim jigs with the new premium Trokar 805 flat eye flippin’ hooks – the sharpest hook made! See table for hook size requirements. Hook size corresponds with lure size from left to right (ie: 3/0 fits in 1/4oz cavity).