Epiroc SB hammers come with a 3-year warranty but only if genuine Epiroc SB tools are used. The difference in price between a genuine Epiroc SB tool and a non-genuine Chinese copy may only be a few pounds, but if breaks within a month and damages your hammer piston your warranty is invalid. Stick to genuine, because of our buying power PES have secured a fantastic price on genuine Epiroc SB tools so now there is no need to compromise. Keep it genuine, only use Epiroc SB steels………..you know it makes sense.