Acetate - Acrylic - Delrin - Bakelit - Ebonit - Galalith - Synthetic "R"
Plectrums synthetic "R" pick (very very resistant to wearing down, recommended for gypsy jazz guitar players)
Acetate: appearance close to the tortoise shell, warm sound.
Acrylic: offers a very dynamic, little colorful attack.
Delrin: warmest sound and soft of the range.
Galalith , Bakelite, ebonite to discover
The tip, carved, facilitates the up and down.
Its profile generates a sound very similar when coming back upwards.
Dugain tip is the link between you and your instrument and will reveal the depth of the sound of your guitar.