Musicmast bass tuners question help please

[bassdog]

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Generic Bass Tuning Keys, 4 In Line, Chrome, 1 Set

Oops, Musicmaster bass
Can anybody help me please. Are these 3/8 in. pole pieces. thanks!!!

 

[iguana]

Which musicmaster bass have you? A Fender pre or post 77? Or it's a Squier? There are three different tunners on Fender basses.