Please check the bottom of the Ukulele first. Please reference the user’s guide of leather if there is a hole. If not, please reference the user’s guide of sound hole hook. After the purchase, please remark the type of your Ukulele, we will install the accessory before the shipment, thank you. ** Length of the straps** **The straps of Ukulele** Accessories Accessories of leather hook： Slide Buckle x2+ Belt x 2+Sound Hole Hook+Neck Rope+Manual Accessories of sound hole hook： Slide Buckle x2+ Belt x 2+Leather (leather device that attaches to the bottom rim of a ukulele)＋Neck Rope+Manual User’s guide of Ukulele The user’s guide of Neck. The user’s guide of Sound Hole Hook. The user’s guide of Leather. (leather device that attaches to the bottom rim of a ukulele)