Prepare for unexpected circumstances with the versatile Boundary Probe Ski Poles. Crafted from a durable and sturdy aluminum material, these free ride poles transform into a backup avalanche probe, so you can explore freshly groomed slopes and big mountain lines with ease.. . This product will be shipped directly from Black Diamond and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. Aluminum shaft construction offers sturdy and lightweight reliability. Dual density rubber grip. FreeRide series strap. FlickLock Pro adjustable locking mechanism for easy adjustments. Powder baskets. Screw lower shafts together for avalanche probe. Adjustable length. 1 lb. 6 oz. total weight.