Thank you for viewing! ★Brand new, unused, free shipping★ ・Instant purchase without comments is welcome! ・Please refrain from "price negotiations" These are aluminum bobbins specifically for industrial and professional sewing machines! Scratches or warping on bobbins can significantly affect thread tension. As they are consumables, we recommend replacing them early if you feel any discomfort! Inertia works when sewing at high speeds. Compared to heavy iron bobbins, lightweight aluminum bobbins have less inertia, making thread tension more stable♪ Aluminum is rust-resistant and easy to care for! The [cut type] with grooves in the shaft can be set in a bobbin winder◎ [Compatible Models] Compatible with JUKI, Brother, Janome, Singer, and other sewing machines. *Some models may not be compatible. Please check the product size and make your own judgment. *Please note that these cannot be used with household sewing machines. [Size] Outer diameter: 20.8mm Inner diameter: 6mm Thickness: 8mm [Material] Aluminum [Quantity] Set of 10 ■Shipping method: Japan Post *Delivered as mail and placed in the mailbox (or delivered if it doesn't fit). *If it doesn't fit in the mailbox, a delivery notice will be left. *Delivered in an envelope (simple packaging) or a宅配用ビニール袋 (delivery bag). *We try to ship as soon as possible, but it may take 1-2 days as I work a regular job. [Notes] ■Please refrain from purchasing if you are looking for perfection like a Japanese shop or if you are very sensitive. ■We have included actual product images, but specifications may change depending on the lot. ■We do not offer bulk discounts or price reductions as we offer the lowest price. ■By purchasing, you agree that you have confirmed the description and profile, and we will proceed with the transaction accordingly. 27102025