The Handylift Wheeler is primarily designed for 600 x 600 clear opening single-piece sewer covers with two keyholes. Tested to a safe working load of 1 tonne. Lifting power is achieved through its combination of telescopic handle and screw jacks, which can be engaged when facing stuck covers that won't prize up using manual leverage alone. No more back and finger injuring when lifting manhole covers - Various key types are available separately making the Handylift Wheeler an ideal low cost solution. Don't forget to order your keys when ordering! 1-2 days delivery due to not being carried in stock