This is an suitable alternative to a step ladder. It has 3 treads and an platform height of 0.72m and an working height of 2.61m

This is an suitable alternative to a step ladder. It has 5 treads and an platform height of 1.20m and an working height of 3.10m 

This is an suitable alternative to a step ladder. It has 7 treads and an platform height of 1.65m and an working height of 3.54m

This is an suitable alternative to a step ladder. It has 4 - 6 treads and an platform height of 1.06m - 1.52m and an working height of 2.96m - 3.42m 

This is an suitable alternative to a step ladder. It has 7 - 9 treads and an platform height of 1.77m - 2.23m and an working height of 3.69m - 4.13m