Answer: crampons

AnswerCrossword Clue
CRAMPONSMountaineer's shoe spikes
CRAMPONSTraction-enhancing boot attachments
CRAMPONSClimbing irons.
CRAMPONSSpikes for walking on ice
cramponsspiked iron plate worn on boots or shoes for aid in climbing or to prevent slipping on ice, snow, etc.
cramponsdevice for grasping and lifting heavy loads, usually consisting of a pair of hooks suspended from a chain or cable, the upward pull on which provides tension for the hooks to grip the load on opposite sides