I used these to repair the woofers of a pair of woofers in Heathkit AS-1373 loudspeakers. The FSK-10F kit fit perfectly. The speakers now sound as good as new (very good indeed)! Customer service at Simply Speakers was also quick, proactive, and precise in providing me with customer support to identify the correct kit for these loudspeakers. Even if I could save money by dealing elsewhere, I'll return to Simply Speakers if I need future parts like this.
Reviewed by: (Verified Buyer) Douglas De Boer from Iowa.