The Häfele/Kesseböhmer 372.51.902 replacement gas piston is sold individually (one piece per order), not as a pair. The product listing identifies it as a 200 N spring. DK Hardware +1 It appears to be a potential replacement for Kesseböhmer 0013369006 because both are rated at 200 N. The original part is approximately 210 mm extended and 155 mm compressed. Confirm the mounting style and dimensions before ordering to ensure compatibility.