Quick view Wishlist Astral 500 to 970mm Pool Ladder Tread Adaptor Kit £419.00 500 to 970mm Pool Ladder Tread Adaptor Kit For use with disabled access swimming pool ladders, using this kit you can transform a 500mm wide ladder to 970mm. Please note: 1 kit is required per tread. (EG 5 treads will require 5 kits for complete... Compare