2 adjectives to describe lifters

"Lloydand that!" "This was his little messenger, his useful Mercury," Hewitt explained, tapping the cage complacently; "in fact, the actual lifter.

He walked off, taking with him the door mat, an umbrella that stood in the hall, four coats and three hats that hung on the rack, besides numerous other small portable articles of vertu that would have come handy for a professional "lifter.

2 adjectives to describe  lifters