SeaSucker Riser Block & Hardware. This 3/4" HDPE block fits right under your fork mount. Mounting hardware included. Specifications for SeaSucker Riser Block and Hardware: Manufacturer: SeaSucker Length: 6 in Height: 6 in Width: 4 in Weight: 1 lb Package Contents: SeaSucker Riser Block and Hardware SeaSucker CX2055: Riser Block & Hardware