Iron plate helmet, scale armour, triangle helmet and shoulder cover were found in the Jisan-dong Tumulus No. 32. A baseball hat-shaped helmet was excavated in the Jisan-dong Tumlus No. I-3. This helmet was often found in the mounded tombs in Japan. This fact means that there were active exchange relations between Daegaya and Japan.

Armours and helmets were more excavated in the Gaya area than in the Silla area. This is because in the case of Silla the symbolic meaning of the armour and helmet which indicates the wearer’s power declined with the emergence of gold and silver products. While in the case of Daegaya, such a meaning continued. This may suggest that Daegaya was inferior to Silla in terms of social development.

On the other hand, harnesses can be classified into bits, stirrups, saddles, horse strap pendants and horse bells. These were used for controlling a horse, stabilizing a jockey and decorating a horse. Of these, oval plate-shaped bits and blade-shaped horse strap pendants are the most typical harnesses of Daegaya.

The same kind of bits are also found in the main stone chamber of the Jisan-dong Tumulus No. 44, the stone compartment protecting coffin of the Jisan-dong Tumulus No. 22 and the Okjeon Tumlus No. M3 in Hapcheon.

Of horse strap pendants, the blade-shaped horse strap pendants discovered in the Jisan-dong Tumulus No. 44 and the Okjeon Tumlus No. M3 in Hapchion are representative relics. The iron stirrups of Daegaya show a remarkable difference to those of Silla in their form. This kind of harness of Daegaya was diffused in the Japanese Islands and formed the mainstream of harness in the late tumulus period.