THE INSIGHT QUICK RELEASE SEAT CLAMP IS MADE FROM ALUMINUM AND FEATURES A LIGHTWEIGHT QUICK RELEASE LEVER THAT MAKES FOR EASY SEAT POST HEIGHT ADJUSTMENT A MILLED OUT CLAMP AND MINIMAL DESIGN HELPS KEEP THE WEIGHT DOWN TO A VERY LOW 27GRAMS. APPLICATION: JUNIOR MINI SIZE RACE BMX TO FIT SEAT TUBE FRAME SIZE: 25.4mm. NOTE MEASUREMENT IS FOR FRAME DIAMETER AND NOT SEAT POST DIAMETER. Features : Alloy clamp hardware Screened Insight logos curved quick release lever Each clamp has laser-etched logos Adjust tension bolt Weights : 27 g / 0.95 oz (25.4)