Caplugs ZBPFE-15MMQ1 Plastic Ergonomic Button Plug with Flush Type Heads. BPFE-15MM, TEO, Hole Size .571-.631" Metal Thickness .031-.079", Black (Pack of 100) music_UK_update_2021 There is also a V-CTR

There is also a V-CTR button that can change your voice in 4 different ways with just a click of the button

SECURE AND RELIABLEInternal Ratchet with Self-Locking feature protects against vibrations

Durability is greatly improved

Violin | Black | Pack of 2

Supports Volume Adjustment & Headphone Amplifier FunctionProfessional Audio Amplifier Chip and Volume Adjusting Knob

Caplugs ZBPFE-15MMQ1 Plastic Ergonomic Button Plug with Flush Type Heads. BPFE-15MM, TEO, Hole Size .571-.631" Metal Thickness .031-.079", Black (Pack of 100) music_UK_update_2021 There is also a V-CTRCaplugs ZBPFE 15MMQ1 Plastic Ergonomic Button Plug with Flush Type Heads. BPFE 15MM, TEO, Hole Size . 571 . 631" Metal Thickness . 031 . 079", Black (Pack of 100) Ergonomic Button Plugs with flush type heads, designed primarily to plug holes in sheet metal. The BPFE plugs offer greater versatility because of the pliable nature of the material. One size plug fits a variety of different sized holes. Quick and easy installation and removal. : : A: 0.