The ultimate spawning log: Natural Kawara wood oak, 10 pieces, No. 1040

This is Quercus wood aged with Ganoderma lucidum.
Photo 1: All items. Photos 2 & 3: Cross-sections. Photo 4: Side view. Photos 5-9: Cross-sections with toothpicks.
◎Approximate sizes:
Diameter 4.5 x 5 cm, Length 13 cm
Diameter 5 x 5.5 cm, Length 12 cm
Diameter 5.5 cm, Length 13 cm
Diameter 6.5 cm, Length 13 cm (x2)
Diameter 6.5 x 7 cm, Length 13 cm (x2)
Diameter 7 x 7.5 cm, Length 13 cm
Diameter 7.5 x 8 cm, Length 13 cm (x2)

For:
Dorcus titanus
Phalacrognathus muelleri
Allotopus moellendorffi
Prosopocoilus inclinatus
Stag beetle breeding supplies
Natural egg-laying wood
Egg-laying wood
Ganoderma lucidum
Bikuwa (a type of beetle)
Type of supplies: Larva breeding supplies/Larva substrate bottles