Mine Worker Pickaxe

bonus bUnbreakableWeapon;
autobonus "{ bonus bCritical,20; }",50,7000,BF_SHORT,"{ specialeffect2 EF_ENCHANCE; }";
.@r = getrefine();
if (.@r>=9) {
   bonus bCritAtkRate,15;
} else if (.@r>=7) {
   bonus bCritAtkRate,5;
}