0.8 MOD gear 22T, 30T, 40T & 60T (for stepper motors fitted with hex shaft coupling connectors)

0.8 MOD gear 22T, 30T, 40T & 60T (for stepper motors fitted with hex shaft coupling connectors). I apply these gear wheels for focuser & rotator control of telescopes via ONSTEP ASCOM driver. One M4 flat-head (8mm in length) screw is needed for assembly, and the coupling connectors can be found, for examples,  as follows:

https://www.amazon.com/uxcell-Coupler-Coupling-Flexible-Connector/dp/B08M3H71SW/ref=sr_1_27_sspa?crid=310AYC28BCVT6&keywords=stepper%2Bmotor%2BHex%2BCoupler&qid=1683624915&sprefix=stepper%2Bmotor%2Bwheel%2Bcoupler%2Caps%2C9426&sr=8-27-spons&smid=A1THAZDOWP300U&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExRkdVQ0ZKR0o5TE44JmVuY3J5cHRlZElkPUEwOTg4MTY5QldVN0cxQzJJM1RJJmVuY3J5cHRlZEFkSWQ9QTAxODkyMzIyM080MUREWjhNWkFFJndpZGdldE5hbWU9c3BfbXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ&th=1