The product is only compatible with Amope Pedi Wet & Dry Foot File, Amope Pedi Advanced Electronic Dry Foot File, Amope Pedi Electronic Foot File. Any other brands and models are not supported. 12 EXTRA COARSE REPLACEMENT ROLLERS to Perfectly compatible with Amope Pedi Electric Callus Remover Foot File, washable meterial designiedfor Repeated Use. Safely and Effectively - Those replacement rollers feature curved design and fits your feet perfectly. Long lasting diamond crystals micro-abrasive particles surface buffs away hard, rough, cracked, dry and callused skin, get soft beautiful feet effortlessly TOP GRADE MATERIALS - 2 times more hard micro-diamond crystals abrasive particles compare to other brands, make it removing dead skin more efficiently, and ultra durable than ever. Exact Fit for Amopé Pedi & Velvet Smooth Models – Precision-engineered replacement roller heads seamlessly compatible with Amopé Pedi electronic foot files (Wet & Dry Rechargeable, Advanced, and Classic Blue/Pink battery-operated handles) as well as popular Velvet Smooth devices. The standard 2.24" length shaft with dual-notch drive locks firmly into place with zero rattling or slipping. (Please check our comparison image to match your device handle before ordering). Perfect Refills - We're so confident that you'll love our replacement refill roller, if you have any questions, please contact us.