Review for LEGO set 8959 Claw Digger from Brickipedia
“The Claw Digger is one of the many vehicles designed by Rex. The Claw Digger has two arms, one on each side. Two knobs at the base of the arms allow you to swing the arms up and down by rotating the knobs. It uses both of them to chop through rocks in order to find the... More energy crystals. It carries a stick of dynamite and a pick-ax on the back behind the engine.”
Full review at brickipedia.fandom.com