请教这个东西有必要买吗？Costco - DREMEL 300 series kit with 24 pieces

bigbowl

Costco - DREMEL 300 series kit with 24 pieces :: 34.99$ (usually ~90$)
( R% p, H/ f( X8 ^" Q. p- P7 h
4 {4 H, d) k5 C! ^- k) }2 C" T. r
http://forums.redflagdeals.com/h ... ually-90-a-1115668/

; e4 j* [. X6 Q$ t4 N, e( P红旗网上还挺hot的，好像只能打磨吧，还有什么功能？谢谢！