Three-stage 16cm inoculation rod with hole, 1000 pieces/piece, new material production (milky white), Three-stage 16cm inoculation rods with holes, 1200 pieces/piece, produced from ordinary materials (random color), Rod without hole three-stage 16cm inoculation rod 1000 pieces/piece new material production (milky white), Rod without holes, three-stage 16cm inoculation rod, 1200 pieces/piece produced from ordinary materials (random color)