Thank you for viewing. This listing is for a set of 10 brand new 6.35mm female mono input/output jacks for electric guitars and basses. These are standard jacks commonly used in effects pedals, stompboxes, and switchers. Size: 6.35mm Can also be changed to stereo type. 150 yen/piece. Please let me know in the comments if you wish to change. Immediate purchase is welcome. Shipping costs will be covered by us.