Aluminum Climbing Spikes FIELD TESTED & APPROVED! Over the Last 16 Months - We've had these Tested in the Field & Approved by FOLEY Tree Service in Northern Wisconsin's Toughest Conditions. Longer Gaffs Designed for Tree Climbing. Short Gaffs are best for Poles. Lightweight Aluminum & Durable Construction. Comfortable & Washable Padding. Spurs can be Easily Sharpened. Wide Velcro Cinch Straps. Contoured Shank. One Size Fits Most Sold with Short & Long Gaffs Spare Parts Available. Spikes Come in a Hi-Vis Carry Bag! Does not meet ASTM F887 Standards for Flame Retardancy