Instruct: Classify Amazon reviews into positive or negative sentiment
Query: expensive

This was designed to fit the nail head but often slips and damages the floor. I ended up using my finishing nail setting tool instead and surprisingly that worked better. The finishing nail setting tool has tiny round tip with groove instead of this flat screw driver looking tip. That groove helped to prevent slipping when I apply with a hammer. I initially thought the round tip could ruin the nail head or puncture or leave round impression on the hardwood material but this wasn't the case. I paid three dollars for the set of finishing nail setting tools (3 total in different size) at local store.