9" outer casing length
Column/piston diameters are 50mm (tapered to fit) at chair base and 28mm (tapered to fit) at seat mechanism
Suitable for executive or managers chairs
Heavy duty 150kgs / 23 stone
BS Certified and SATRA tested
2 years guarantee
The term 'drop through' refers to where the bottom of the gas lift protrudes through the bottom of the base, usually used with pyramid style bases.