Abstract: An hydraulic attachment (10) adapted to be mounted to machinery or a vehicle such as a skid-steer loader (35) and having a telescopic mast assembly (11) including a first lower mast member (12) and at least one second upper mast member (13) telescopically engaged with the lower mast member (12) and at least one hydraulic actuator (15) for extending or retracting the upper mast member (13) relative to the lower mast member (12). Mounting means (34) are provided for mounting the mast assembly (11) to the loader (35) so as to be supported in use in a substantially upstanding attitude and the mast assembly (12) includes support means (22) at its upper end for supporting or carrying a tool such as an impact applying tool (23).