Feature: 1. Stable Base: This ladder levelling tool allows you to use extension ladders on stairs by creating a stable, level base on the stairs. 2. Non Slip Surface: This ladder levelling tool with a non slip surface is designed for professionals and is the perfect tool for the everyday handyman. 3. Easy to Use: This ladder levelling tool can be set up in minutes without installation, which can also be easily moved from one staircase to another with little effort. 4. Robust and Durable: This ladder levelling tool is made from a safe and durable aluminium alloy that is extremely robust and will last a long time. 5. Excellent Applicability: This ladder levelling tool can be used for two foot tread ladders, telescopic ladders, straight ladders etc. Specification: Item Type: Ladder Leveler Material: Aluminium alloy Suitable Ladder Feet: Width maximum: Approx. 19cm / 7.48in, Length maximum: Approx. 55.8cm / 21.97in. Package List: 1 x Ladder Stabilizer Top2 x Ladder Stabilizer Support Bar1 x Ladder Stabilizer Bottom3 x Adjustment Screw Bar3 x Fixing Clip Note: This ladder leveler is only suitable for straight ladders, not for herringbone ladders