Presa lock grips are lightweight, sure gripping lock grips for every situation! Presa works well on your mountain bike, BMX, quad bike or Jetski! The locking rings are aluminium alloy with stainless steel bolts to secure. Rippled rubber grips for extra grip and secure feel while bashing along your favourite trail or bush path. Rubber and alloy mix allow Presa to be lightweight and durable for use in salt water or fresh water conditions!