Sturdy to use:these finger picks are main made of stainless steel, easy to break, no pungent smell, appropriate bending amplitude and tightness can fit your fingers well; The guitar thumb picks are made of celluloid material, which is comfortable to use, providing you with nice protection for your fingers and fingernails Thoughtful design:this open design which means you can feel the strings for extra control, they are exquisite gifts for your friend who likes guitar or player, or for personal use; Please don't get discouraged if you can' them the first time you put them on, and do more practice About size size:you have to fit the metal picks to each finger by bending the openings, the metal is pretty stiff, which is good for retain their shape; Please be careful of the size, this size is suitable for most adult fingers but please confirm the size of your fingers before ordering Designed for practice:these guitar picks are mainly applied to protect fingers from pain and sweat, making the sound of the instrument fuller and more realistic; Practical accessories for helping practice guitar and improving your performance Widely applicable:these guitar thumb and finger picks can be applied in playing electric guitar, acoustic guitar, classic guitar, , banjo and so on, which help you quickly and effectively the sound quality stable, strengthen guitar and graininess Colour:Silver & Blue-Black Material:stainless steel + celluloid Package Contents: 8 * index finger picks 4 * thumb picks Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.