These adapters are great for your 45rpm or 7" record collection. The red piece pictured is the insert for that large hole in the 45rpm record. These are a great alternative adapters to the yellow inserts, which we also have. These are super for your 7" record listening session. If you bought a used record player and it was missing the adapter or you have lost yours, these are great replacements at at economical cost. Compare with name adapters which price up to $25 and $40!