Professional pole climbers (also known as spikes, spurs and hooks) from Buckingham. Buckingham Buckalloy aluminum climbers are made from high strength aluminum alloy, making them incredibly strong and lightweight. A94089AV climbers come with 1-3/4" (45mm) replaceable gaffs which work well for utility work. A94089AV climbers have top sleeves that will adjust from 16-1/4" (42cm) to 18-3/4" (48cm) to match your calf length. These climbers come complete with patented hook & loop bottom straps. Sold in pairs only.