Versatile: 125*20mm / 150*30mm air shocks for driving, folding and scooters; 165*35mm / 190*50mm for mountainbike / electric bikes Air pressure adjustment: Tune air pressure from soft to hard, American valve, max 250 PSI for desired ride quality Material: Aluminum alloy construction ensures lightweight yet sturdy performance. High strength, stable and practical, lightweight design, reducing the burden on the body, resistant to pressure, and durable Sealed Design: Travel sealing ring keeps out dust and water for lasting operation Stylish: Laser colorful logo adds a touch of flair to these shock absorbers These air pressure shock absorbers from Meroca are the perfect choice for enhancing your cycling experience. With four sizes ranging from 125mm to 190mm in length, and journey options from 20mm to 50mm, you can find the ideal fit for your driving, folding, or mountain biking needs. Crafted from lightweight aluminum alloy, these shock absorbers offer adjustable air pressure up to 250 PSI, allowing you to customize the softness or hardness to your preference. The stroke sealing ring ensures a dustproof and waterproof design, while the laser-etched colorful logo adds a touch of style. Whether you're tackling city streets or rugged trails, these shock absorbers deliver a smooth and comfortable ride.