It is.........a couple of Infinite Illusion Jumbos!
Pictured above are two Infinite Illusions' Jumbo diabolos and a pair of sticks with string. At least Infinite Illusions sold several of these in the USA several years ago.
Diabolo's diameter is 5 inches (12.5 cm).
Diabolo's height is 5 3/4 inches (15 cm).
Weight is probably about 300 grams.
This diabolo is similar in size and weight to the Henry Circus. It also is fairly well balanced. The hard plastic sides stay bright looking, and the axle size is close to the Babache diabolo for good speed. The greatest thing was it's cheap price. Sadly most stores have sold out of these.
I was told that 6 juggling stores around the world pooled their money and had a bunch of these made up in the 90's.
Sticks are Fiberglass and 16 inches (40 cm) long.
The gray caps on the sticks clue you that this is a Diabolo Tricks set of sticks.
String is #18 braided black/white fluorescent nylon 27 inches (69 cm) long.
Length varies depending on diaboloist preference. See FAQ-String Length.