The Clutch's waffle tread is specifically shaped to the fingers and oriented for traction in varied conditions. The diameter is narrow at 3mm with an extra wide format at 15mm overall. Features Chromag's special tacky compound based on 25a durometer and Chromag's unique Split-Teardrop' end clamp which effectively covers the bar end while still utilizing a true pinch-clamp for the best purchase to the bar. Weight 1g /pair The Clutch'S Waffle Tread Is Specifically Shaped To The Fingers And Oriented For Traction In Varied The Diameter Is Narrow At 30Mm With An Extra Wide Format At 150Mm Overall Features Chromag'S Special Tacky Compound Based On 25A Durometer And Chromag'S Unique Split-Teardro Weight 100G /Pair