They are used to adjust the position of the carrier with a set on each side.
99887-55975 Seat Adjustment Device, Plastic Seat Adjustment Control Replacement for Toyota, for RAV4, for Camry, for Venza, for Avalon; for Lexus, for ES260 2017-2023
HDKEAN Replacement Metal Carburetor Manual Choke Starter Fast Idle Plunger For S&S Super E/G Carb Multi-Gear Adjustable Motorcycle Carburetor Throttle Adjustment Screw
4Pcs Replacement Knob Compatible with Saris Bones Bike Rack, Heavy-Duty Frame Adjustment Knob, Tool-Free Easy Fit, Stable Bike Carrier Spare Parts
10x Motorcycle Brass Carb For N424-22 Motorbike Carburetor Slow #30-55 Replacement Adjustment
Ddujbtp Multi-Gear Adjustable Carburetor Choke Plunger For Super E/G Carb Replacement Choke Starter Fast Idle Plunger Motorcycle Carburetor Throttle Adjustment Screw
Malloy Wrench Adjustment Push Rod Wrench Turnbuckle Nut Ball End Joint Remover Tool for RC Car Replacement 3/3.2/3.5/3.7/4/5/5.5/6mm-Red