Product size: Width 13mm, thickness 8mm, inner circumference 800mm, outer circumference 859mm, Manual measurements, please allow slight errors. Replacing OEM numbers:135061429, 135061429/0, 35061429, 35061429/0, which is a direct replacement for the old or broken one. Compatibility: This product is Compatible with Stiga Combi 1066, 166, Compatible with Castel Garden XE 866, 966,Atco Rider 27 Easy to install: Direct replacement without adjustment, perfect compatibility and high reliability. Product material: This product is specially designed and made of rubber material, with high service life and not easy to damage., Manufacturer: OTOTEC