The Klaus BENDER violin end button is not just push fitted into the instrument, but screwed into the bottom block of the instrument. The fine thread on the cone nearly doubles the area of contact compared to conventional smooth cones. Screwed in tightly, this allows perfect sound transfer between tailpiece and instrument.
The cones of the Klaus BENDER end button are made of aluminum. They have more mass than the regular wooden or plastic cones, a fact that has been tested and shown to improve the sound.
Aluminum is not influenced by changes in temperature or humidity. The Klaus BENDER cone thus firmly remains in the instrument, a big advantage for musicians who do a lot of traveling.