+3 KNOB, REPLACEMENT H-RAIL CLAMP SKU 84620111 $2.39 In stock Quantity: 1 Add to Bag Product Details Part #: 84620111 Hobie H Rail Clamp Replacement Knob Replacement knob for Hobie H-Rail clamp. - H Rail Clamp knob for your H Rail accessories- The inside of the knob is made of a brass screw in backing- Sold individually Save this product for later Favorite