The Oster Universal Hair Clipper Comb Attachments- 10pc Pouch Set Universal Comb attachments provide a layered, blended look that reduces the need for excessive scissoring. Designed with rounded edges for safety, the combs easily attach over the blade for a fast, secure fit in all Oster clippers, and most major brands. The Universal Comb Set includes ten attachments plus a soft, adjustable pouch for convenient storage.